50 Cent Explains How He Lost a Frightening Amount of Weight for a Movie Role
50 Cent was so passionate about his role in Things Fall Apart, he convinced the entire crew to hold off on filming while starved himself completely by only drinking liquids. Say what you want about the guy, but that's dedication.
[There was a video here]
No word on whether or not said liquids were his own brand of Vitamin Water or not...