Seth Rogen
For most part of his career, Seth Rogen was cast in big guy roles. He plaid an adorable chubby character in 40 Year Old Virgin and Knocked Up in which his act was praised by both critics and audiences. After being cast in the role of Green Lantern, Seth felt that he needed to work on his chubby body. It was then that he commenced exercising with an aim to shed off his weight. He also made some major changes in his diet which worked out pretty effectively towards his losing weight. Currently, Seth looks a lot better than he did before, and healthier too. He is definitely loving his new looks too judging from his evident confidence.