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David Ayer DVD/Blu-ray (109mins)

Jennifer Aniston is "open" to being a single mother.

The dilemma that arises in Ron Howard's sub-par comedy is, what do you do on discovering your best friend's wife is messing around with another fella?

The film-maker James Cameron, the ultimate technology geek, is building up momentum for Avatar 2.

Come in Vince Vaughn, your time is up. The poker-faced funny-man co-wrote, along with Jon Favreau (the pair have fallen a long way since their sparkling Swingers), this dismal concoction.

Starring Vince Vaughn, Jason Bateman and Kristin Davis

The 'Swingers' actor Vince Vaughn might be 'money' in Hollywood, but he's also kept his feet on the ground. Lesley O'Toole meets a star who's still one of the good guys

Science hasn't been in the best of shape on British television recently. Equinox seems to have disappeared into some broadcasting black hole, Horizon has been steadily regressing into second childhood and mainstream offerings – such as Bang Goes the Theory – appear to be pitched at a hyperactive seven-year-old out of his skull on SunnyD. There are sporadic efflorescences of the serious on BBC2, but if you want something sustained and detailed your last best hope is BBC4, a little cranny in the rock that sustains some flourishing micro-cultures of straightforward instruction. And even here there are signs that the evolutionary pressures are having their effect. In The Cell, for example, Dr Adam Rutherford referred to Anthony van Leeuwenhoek as "a lens geek", to Robert Hooke as "the go-to guy when you had very small things to investigate", and concluded a little aside on Robert Brown's unique double contribution to physics and biology with the exclamation "Respect!", possibly the least convincing attempt to sound "street" since Richard Madeley channelled Ali G on the This Morning sofa.

Based on a 1970s TV series, this spoof adventure epic stars Will Ferrell as an idiot palaeontologist whose invention of a showtune-singing time machine magicks him and two friends into a parallel dimension where dinosaurs roam.

Seth Gordon (88 mins)

Oscar-winner Reese Witherspoon has survived a difficult divorce but now the diminutive star is back – and the best-paid woman in Hollywood. She opens up to Lesley O'Toole

US best-selling author Michael Crichton, who wrote such novels as "The Andromeda Strain" and "Jurassic Park," and created the popular TV drama "ER," has died at 66, his family said today.

In an echo of the film Jurassic Park, DNA from an extinct animal has been re-activated in the laboratory for the first time.