Sucker Punch
Hot chicks, action movie, good stuff...
Ishtar 1987. Once considered the biggest box office flop, this is one of the most hilarious movies ive ever seen. Dustin Hoffman and Warren Betty play 2 songwriters that are bad... hilariously bad at writing songs. Its charming, hilarious and even shot on location.
Given the highly acclaimed cast and direction, I doubt this was an underrated movie, but I just watched Cinderella Man for the first time and found it be an excellent flick.