JIMMY FALLON Blow Your Pants Off  [Warner Bros.] When he released his first album, 2002’s The Bathroom Wall, Jimmy Fallon was a  Saturday Night Live cast member best known for co-hosting the Weekend Update segment and occasionally pulling out his acoustic guitar to parody popular songs. After leaving SNL, Fallon took over from Conan O’Brien as the host of Late Night and promptly made the show his own—in part thanks to his winning musical...