Reno 911!: Miami (15)<!-- none onestar twostar threestar fourstar fivestar -->

Bungling policemen have been a comic staple of film since the Keystone Cops, but you'd have to stretch the definition of comedy beyond breaking-point to allow this rot membership of the genre. Based on a hit TV series, which mercifully we don't get in the UK, the Reno 911 team comprise a bunch of nincompoops, whose inept law-enforcement creates its very own cordon sanitaire of jokelessness. Paul Rudd, Danny DeVito and The Rock contribute ill-advised cameos, while the principal cast members work overtime in futile pursuit of a punch line. Being this unfunny should be illegal.