'Super Mario Bros.' Cast Reveal Hilarious Comedy Origin Stories

"It was my best performance...it's been downhill since then." "The Super Mario Bros. Movie" stars Charlie Day, Keegan-Michael Key, Jack Black and Chris Pratt share hilarious stories about the first time they performed on-stage, including Charlie "crushing it" at a school play by holding the intermission sign upside down, and Chris getting made fun of by a fellow comedian after performing stand-up for the first time. The cast also dish on their musical origins, and Jack Black pitches a potential future duet with Kelly.