Caught The Three Stooges at a matinee show this morning ($6!) and was pleasantly surprised. I wasn't expecting much, but it turned out to be pretty good. First off, I'm a big fan of the originals. I watched them all the time on TBS back in the '90's. The film has plenty of fanservice. The movie is broken up into three shorts, each featuring classic-style title cards and they feature all the original theme songs.
When the Stooges are on screen, it's great. The mannerisms and voices are near perfect. That isn't to say they beat the real thing, but I'd take the Stooges in this movie to the later years of the real Stooges. Downsides would have to be some child actors, a period in the film in which the Stooges are separated (it's only ten minutes or so) and the first ten minutes in which the Stooges are played by kids. They do a decent job, but I wanted to see the adult actors. Also, theres some gross out humor, but it's far tamer than other Farrelly brothers flicks.
Favorite bits: Larry David as a nun, the bell tower repair scene, the whole hospital scene, this bit where this guy gets stuck in a street sweeper, the salmon farm, Jersey Shore cast getting smacked around (hate those fucks), this extended Stooge fight on a stage (very stripped down and felt very classic).
Overall, I'd give it a 7/10 as a fan of the old shorts. Compared to other similar comedies, like Dumb and Dumber, it's not as good. If you don't like or don't care about the Stooges, it would probably be a 5/10. Appreciation of the old routines really helps the film.