I'm going to go with Assassins (1995). It's probably not the most underrated film ever, but it's one I like that a lot of people dismiss as lame. Unlike many of Sly's mid-90s movies, it's not particularly cheesy or clunky -- instead, it's a slick, character-driven action movie. It's no Bourne Identity, true, but it's fun in a non-deep way.
|Robert Rath (Sylvester Stallone)|
|Electra (Julianne Moore)|
|Miguel Bain (Antonio Banderas)|
So, while Assassins isn't cinematic genius, it's also not a clunker. Anyway, I enjoy it.
Happy New Year!