Here's a movie that bombed because nobody had any idea how to advertise it. It turns out that "Set it Off" is the devastatingly sad story behind a string of unusual bank robberies. I highly recommend it as you really grow to care about the characters, which makes the final act all the more harrowing. My only problem is that the romantic subplot seems out of place. Other then that, make sure you have a box of tissues ready.
Review of Set It Off
