Name that underrated movie.

[Nerdkiller likes BD]

I'm not sure if something like this has been done yet but if so, then mods, delete the thread.

Now, I was thinking, what movie do you think had a good critical reception, but didn't do a good job at the box office. For example, take Slither back in 2006. It may have been from the tiring horror comedy genre, but according to Rotten Tomatoes, it was rated favorably towards critics at an 85% "Certified Fresh" approval rate (it was even placed second in the top horror movies of 2006, heres the link anyway for proof), but it didn't even recover half of the movie's budget. Heres the Wiki link if you want more info on the movie. What movies do you really think deserve more than what the audiences thought of them?