Is Nick Jonas still eyeing a role in Jersey Boys? The former How to Succeed headliner already expressed his interest in playing Frankie Valli in the long-running musical, and now he's performing Four Seasons tunes on stage! Jonas reunited with The Best Man star John Stamos (both appeared in the Hairspray concert at the Hollywood Bowl last year) to surprise guests at the Bitter End in New York’s Greenwich Village for an impromptu rendition of “Can't Take My Eyes Off You.” Watch Jonas hit the mic (and Stamos take on drums) below!