It's common knowledge that actors often have to gain or lose a few pounds depending on the roles they are cast in. But when they have to gain 30 pounds or more for a role -often in only a handful of months, the weight gain gets seriously intense. In fact, it seems that many of them resort to chugging melted ice cream just to get as many calories in as quickly as possible (though why Jared Leto thought it was neccessary to add olive oil and soy sauce into the mix is a mystery). The worst part is how often it doesn't even pay off. In fact, many actors went through all this suffering only to see their movies fail and be panned by critics and poor Ryan Gosling gained 60 pounds for the movie The Lovely Bones only to get fired since he didn't clear the weight gain with director Peter Jackson beforehand.
Read more about actors gaining weight for their roles at Mel Magazine.