"I gained about 40 pounds. The first week is fun and then after that every week feels like Thanksgiving night, like you're just done. You have no energy and by the end, I was running out of time, I had about two weeks left, so I put myself on a hot pocket diet, which was two hot pockets every three hours. It was horrible..." Actor Jason Segel did not enjoy the diet he put himself on to gain weight for his role as author and essayist DAVID FOSTER WALLACE in THE END OF THE TOUR.