Justin Bieber has been a very busy man! First he releases "Yummy" and announces his return to the music realm. Then releases an original Youtube series called "Season" which gives you a very vulnerable and real look into the life of the Biebs. And then he announces his tour "Changes" You'd think that be enough right, but no! He had to make a visit to Ellen and this week he returns to Saturday Night Live. Bieber has been on there multiple times and used in many hilarious ways. Take a look back at some of the best clips on SNL and enjoy his transformation from baby face Bieber to current day mustachio Bieber!