Movies please correct my entry ：）

I like watching American movies. But sometimes i just cannot understand ('get' works but it sounds better spoken than written) them, such as some of the high-ranked movies on IMDB. I don't know whether it's the cutural thing or what.  For instance, i wanted to watch some comedies when i had some free time.  especially comedies about school life in America (there's not really a good way to say this...maybe 'teen movies and movies about college, like American Pie and Van Wilder'?), .This summer vacation, i worked with two guys from Pennsylvania. They recommended some movies that they thought i would like. Hangover, 21 jump street, pineapple express, knocked up,etc,i can't remember all of them. I liked the first two a lot. But I can't really understand what's funny about Pineapple Express--does it have something to do with marijuana culture?
i do think that there are some jokes which make sense, but others which i can not understand.
Do you have any great comedies to recommend? I would appreciate that.  Action movies and feature movies (<--all movies are 'feature films'...do you mean dramas?) are also OK!
thx! please correct my mistakes and recommend some movies.

As for movies, try Mean Girls--great high school comedy movie :)

Movies please correct my entry ：）

I like watching American movies. But sometimes I just can not get them, such as some high-ranked movies in IMDB. I don't know whether it's the cutural thing or what. For instance, I'd like to watch some comedies when I got leisure have free time, especially comedies about American school life, represented with such as American Pie and Van Wilder. This summer vacation, I worked with two guys from Pennsylvania, and they recommended some movies they thought I would like. Hang-over, 21 Jump Street, Pineapple Express, Knocked Up, etc. I can't remember them all. The previous two is are quite to my appetite, but Pineapple Express, I can hardly understand where the laugh point humour is. Is it the marijuana culture?
I do think there are some sense of humor that we share, but there are also others which I can not understand.
Do you have any great comedies to recommend? I'll appreciate that. Action movies and feature movies are also OK!
Thanks! Please correct my mistakes and recommend some movies.