Episode 1 is pretty underated if you want my opinion.
Here is some I can conjure up:
No Particular order:
1. Last Samurai
2. My Big Fat Greek wedding
3. Bringin Down the house
4. Spider-man (though #2 is the shit)
5. Patriot
6. Pretty much any John Wayne and Clint Eastwood movie
I can't understand how people can call LOTR and Star Wars overated. If you don't like them fine, but take with a grain of salt. Even my list above are movies I thought were oberated, but I am not going to make a statement saying they suck and you shouldn't watch them because I think they suck. I refuse to become an old cynic, except for music of course.