Jimmy Fallon is one talented prankster! The "Tonight Show" host shocked "The Voice" coaches with a surprise blind audition for this week’s season premiere, belting Michael McDonald's "I Keep Forgettin' (Every Time You're Near)" so convincingly that he got a coveted four-chair turn – with a catch! The hilarious moment was also heartfelt, as Jimmy shared with departing judge Blake Shelton that he wanted to take the stage as a tribute to the country star's 23-season run on the reality competition.