From the guy who brought you Knocked Up and Superbad, comes the hilarious comedy Walk Hard which is a return to the mockumentary world of Spinal Tap. The film is about a young man who makes it big as a larger-than-life rockabilly Stray Cats-like rock 'n' roll musician and songwriter Dewey Cox (Reilly).

Dewey's childhood is a tough one. He grows up on a farm near Springberry in the shadow of his immensely talented elder brother who is the apple of his Dad's eye. When his brother comes to an unfortunate end in a childhood game, Dewey's dad is distraught and Dewey is going to have a lot to do, to make his Dad proud of him again.

From the fifties onwards, Dewey takes America by storm, a few decades later, he's got his own seventies TV variety show and a series of hits follow even though in his most ungainly manner with no idea of how to cope with his new-found fame, Dewey finds it difficult to cope with his growing success.

Behind the scenes, it looks like Dewey Cox has become an overnight musical phenomenon and this is the up-and-down-and-up-again story of a musician whose songs would change a nation. He collects friends ranging from Elvis to the Beatles, and gets addicted to every drug known to man but manages to kick each habit into touch.

A national icon, Dewey eventually earns the love of a good woman - longtime backup singer Darlene (Fischer). From there, Dewey's life becomes a maze of statistics as he gets to sleep with over 400 women, marries 3 times and also finds time to have 22 kids and 12 step-kids.

Walk Hard is one of those surprising feelgood comedies that doesn't take itself too seriously and, in that groove, it hits many of the right notes packing in jokes virtually every half minute in the second half of the film.

Dewey may be a fake rock star, but weaving into his life many real-life musicians from the sixties era, gives you the feeling that Dewey could really have existed. He's also beautifully played by Reilly and his performance is also a reflection on the excellent writing collaboration of Jake Kasdan and Judd Apatow.

The film deserves to do well and will be particularly enjoyed by a Friday night crowd looking for a comedy where they don't have to think too hard. Reilly is well worth the entry money, he has great comic timing, sings well and makes Dewey, a man really of very little talent who enjoys huge slices of luck on the road to fame, really come to life.