Seth Rogan is poking fun at cancer again in the upcoming dramedy 50/50. This time he trades his Funny People co-star Adam Sandler for Hollywood's IT boy Joseph Gordon-Levitt in a story about one guy's (Gordon-Levitt) struggle to beat cancer before it essentially beats him. And how does he do it? Apparently, by laughing it off. Check it out for yourself. It actually looks kinda good. 50/50 hits theaters September 30.