Harold and Kumar Escape From Guantanamo Bay

If this movie were not a complete "let's go get stoned! It's cool!" advertisement, I would recommend it as a comedy.
Overlooking that one drawback I will say that it was funnier than the original Harold and Kumar go to White Castle, perhaps due to the extreme situations they put themselves in.
No race goes un-insulted in this one. Each ethnicity gets jabbed at from one angle or another at some point in the film. This is truly what makes the film funny. It takes one outside the social box, and allows us all to laugh at some of the stupidities that have become stereotypes, and some of the realities we accept in our melting-pot culture.
A positive message of tolerance actually emerges out of all of this racial irony.
If you want to have some laughs go see it, but please don't be persuaded to go and smoke marijuana afterwards.