Are we allowed to write reviews of films which became so mind-numbingly dull and predictable that we didn't even watch until the end? I don't know. Perhaps someone from IMDb should publish a definitive protocol. But 21 was just such a film. I didn't actually walk out of the cinema early because I was at home watching it on DVD. But I really had neither the patience nor the heart to carry on with this formulaic drivel. Yes, I know that the US market it so big that even drivel can recoup its costs and then - hopefully - some. But don't be fooled. If you are inclined to prefer safe, boring, predictable films with the usual content, the usual characters, the usual 'dilemmas', the usual dialogue, the usual clichés, the usual plots and the usual plot devices, this is for you. Otherwise save your money, whether this is showing at you nearest fleapit or 'on offer' at your local supermarket. Save your money and buy a decent DVD instead. Incidentally, Kevin Spacey, rather good in The Usual Suspects and Beyond The Sea, has a habit of picking the occasional clunker. So don't even bother because our Kev is involved. Avoid this b*ll*cks.