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30 years ago, Michael Keaton ruined a huge Batman plot twist on a chat show the day before the film was released in cinemas.
The actor, who played Bruce Wayne in the Tim Burton film, was being interviewed by David Letterman when he let the spoiler slip.
Letterman asked Keaton what the Joker – played by Jack Nicholson – had done to anger his character in the film to which Keaton revealed a little too much.
“Bruce Wayne witnesses the murder of his parents when he’s a kid,” he tells the host, who asks if the Joker was responsible for this.
Show all 35 1 /3535 great films that bombed at the box office 35 great films that bombed at the box office Children of Men (2006) While it's now revered as one of the best films of the 21st century, Alfonso Cuarón's dystopian thriller failed to make its money back at the box office at its time of release in 2006.
Universal Studios
35 great films that bombed at the box office The Adventures of Baron Munchausen (1988) This Robin Williams comedy grossed just $8m against its $46m budget, losing the studio a staggering $38m.
Columbia Pictures
35 great films that bombed at the box office Ali (2001) Ali opened in the US on Christmas Day, 2001, and grossed a total of $87.7m worldwide – and still lost an estimated $63.1m.
Initial Entertainment Group
35 great films that bombed at the box office The Assassination of Jesse James by the Coward Robert Ford (2007) Andrew Dominik's lyrical western only just made back half of its $30m budget in 2007, but found love upon its release on DVD.
Warner Bros
35 great films that bombed at the box office The Astronaut's Wife (1999) Despite starring Johnny Depp and Charlize Theron, this drama was a certified bomb at the box office, making a total of $19.6m from a $75m budget.
New Line Cinema
35 great films that bombed at the box office The BFG (2016) Steven Spielberg's Roald Dahl adaptation grossed just $183m against its $140m budget – a low profit by Disney's standards.
Walt Disney Studios Motion Pictures
35 great films that bombed at the box office Blackhat (2015) Michael Mann's cyber thriller was a box office bomb, earning only $19.7m at the box office against a budget of $70m.
Universal Pictures
35 great films that bombed at the box office Blade Runner 2049 (2017) Just like Ridley Scott's original flopped, this lengthy sequel from Denis Villeneuve grossed just $259m worldwide and is considered a flop.
Sony Pictures Releasing
35 great films that bombed at the box office Citizen Kane (1941) This Orson Welles film may be a beloved classic, but at the time release, it failed to recoup its costs at the box office.
Rex Features
35 great films that bombed at the box office Clockers (1995) Spike Lee's Clockers saw one of the director's most disappointing performances at the box office, taking just $13m from a $25m budget.
Universal Pictures
35 great films that bombed at the box office Deepwater Horizon (2016) Peter Berg's real-life drama fell more than $30m short of its $156m budget, a shame considering it's one of the Friday Night Lights creator's best films to date.
Summit Entertainment
35 great films that bombed at the box office Donnie Darko (2001) Donnie Darko grossed just over $7.5m worldwide on a budget of $4.5m, not helped by its marketing campaign featuring a plane crash weeks before 9/11.
Rex Features
35 great films that bombed at the box office Event Horizon (1997) Upon release, this cult horror was a commercial and critical failure, grossing $26.7m on a $60m production budget.
Paramount Pictures
35 great films that bombed at the box office Fight Club (1999) There was something of a controversy surrounding David Fincher's Fight Club, which aided in making a modest profit of just under $40m at the box office. It's opening run, though, was markedly underwhelming.
20th Century Fox
35 great films that bombed at the box office The Good Dinosaur (2015) While far from being a catastrophic flop, The Good Dinosaur struggled to reach the heights of other Pixar releases. The film grossed $332m worldwide against a $175m budget.
Walt Disney Studios Motion Pictures
35 great films that bombed at the box office Hard Rain (1998) This entertaining 1990s thriller had such poor box office takings in the US, it was released straight-to-DVD in other countries, including the UK.
PolyGram Filmed Entertainment
35 great films that bombed at the box office Heaven's Gate (1980) Michael Cimino's drama is notable for being one of the biggest box office bombs of its time, losing the studio an estimated $37m (over $114 million when adjusted for inflation).
United Artists
35 great films that bombed at the box office Hugo (2011) Martin Scorsese's charming family film was a commercial failure, grossing just $185m against its $150–$170m budget.
Paramount Pictures
35 great films that bombed at the box office The Insider (1999) While acclaimed by critics, Michael Mann's drama – starring Al Pacino and Russell Crowe – never made back its $68m budget.
Buena Vista Pictures Distribution
35 great films that bombed at the box office The Iron Giant (1999) Despite being one of the best animated films of all time, The Iron Giant was a victim of Warner Bros scepticism towards the genre after the failure of previous effort, Quest for Camelot. Future Pixar director Brad Bird's film made $31.3m worldwide against a budget of $70–80m.
Warner Bros
35 great films that bombed at the box office It's a Wonderful Life (1946) While not a major flop, the classic underperformed at the Christmas box office due to stiff competition from other big films.
National Telefilm Associates
35 great films that bombed at the box office Ishtar (1987) Elaine May's maligned comedy, which is being reassessed with every passing year, became a notorious failure at the box office.
Columbia Pictures
35 great films that bombed at the box office The King of Comedy (1982) Although Scorsese's drama was well-received by critics, it bombed at the box office. Lead Robert De Niro said that the film "maybe wasn't so well received because it gave off an aura of something that people didn't want to look at or know."
20th Century Fox
35 great films that bombed at the box office The Lone Ranger (2013) This unfairly maligned Disney release was a box office bomb, grossing only $260.5m worldwide against an estimated $225–250m production budget and an additional $150m in marketing costs.
Walt Disney Studios Motion Pictures
35 great films that bombed at the box office Man on the Moon (1999) This Jim Carrey film from Milos Forman cost Universal a lot of money after it failed to make back its $52-82m budget.
Universal Pictures
35 great films that bombed at the box office mother! (2017) While making its money back, polarising reviews meant that Darren Aronofsky's psychological horror settled for a $14m profit.
Paramount Pictures
35 great films that bombed at the box office Mulholland Drive (2001) It's considered to be one of the greatest films of all time, but David Lynch's head-scratcher failed to make back its $20m budget.
Universal Pictures
35 great films that bombed at the box office Popstar: Never Stop Never Stopping (2016) Despite positive reviews from critics, this spoof grossed just $9m, failing to meet its budget of $20m.
Universal Pictures
35 great films that bombed at the box office Scott Pilgrim vs the World (2010) Edgar Wright's beloved cult was a box office bomb, grossing $47.7m against its production budget of $85–90m.
Universal Pictures
35 great films that bombed at the box office The Shawshank Redemption (1994) This Stephen King adaptation was a box office disappointment, earning only $16m during its initial theatrical run. It would later get re-released and earn $58.3m.
Columbia Pictures
35 great films that bombed at the box office Shoot 'Em Up (2007) This fun action film starring Clive Owen recouped far less than its $39m budget.
New Line Cinema
35 great films that bombed at the box office A Simple Plan (1998) This Oscar-nominated noir didn't meet its budget despite sitting at a paltry $17m.
Paramount Pictures
35 great films that bombed at the box office This Is Spinal Tap (1984) It wasn't until its home entertainment release that this mockumentary became the beloved classic it is today.
Embassy Pictures
35 great films that bombed at the box office Valerian and the City of a Thousand Planets (2017) Valerian grossed $225m worldwide, but due to its high production and advertising costs, it was considered a commercial failure.
EuropaCorp Distribution
35 great films that bombed at the box office Willy Wonka & the Chocolate Factory (1971) This beloved Roald Dahl adaptation starring Gene Wilder made just a $1m profit upon its original release in 1971.
Rex Features
It was here where Keaton delivered the crushing blow to the audience, by saying: “Yeah, but he doesn’t know it ‘till later – I’ve kind of blown the plot here.”
The audience, who was likely comprised of people excited to see the new film, groaned in unison.
You can watch the clip above.
Keaton's blunder didn't hurt the film's box office chances. It went on to gross over $411m (£322m) globally.
Tom Holland , who plays Peter Parker in new sequel Spider-Man: Far From Home The Graham Norton Show “devastated” on Friday night (20 June) after revealing a huge plot twist about Avengers: Endgame , which was released in April.
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