Bill Murray is probably one of the best movie comics of all time. He's great in this movie. Everyone, no matter the age group, will think that this movie is funny for some reason or another. The only drawback is the cursing contests between the main character and a boy. They pull out all the stops as far as curse words go. In their defense, there was no f-word, if that can be any sort of redemption. But other than that, it is a funny movie.
Amazingly funny movie, loved it so much when I was younger, still think it's hilarious today. If you're especially prudish about language I guess that could be a concern, since he pretends to have tourettes.
What About Bob was a hilarious movie! There were several scenes where language was blurted out. ( if these scenes were fast-forwarded, 7+ ) One of my favorite family movies!
I'd say that this movie is appropriate for 10 and up. Weird situations, iffy language, and things that young kids wouldn't understand. Lots and lots and lots of slapstick, so just be aware. However, I did like the movie.