Those American Pie movies really are stupid. Too bad we live in a society that puts such an emphasis on having sex all the time. All those Tom Green/Adam Sandler type movies are pretty stupid too.
Sometimes I live movies about people who are messed up and have to deal with it like:
One Flew Over the Cuckoo's Nest
Charly (based on Flowers for Algernon)
A beautiful Mind
Girl Interrupted
You can see where I'm going here. They're not degrading, they have a point, loads of good actors and if they have any MTV music it still has a point (not that any of those movies do).
Sometimes violent movies are great like:
Aliens
Braveheart
Terminator 2: Judgement Day
The Matrix
Saving Private Ryan
And some sci-fi/adventure:
Star Wars movies (the last two don't really count the same way)
Bicentennial Man
Half the Star Trek movies
Indiana Jones movies