"Oscar! Oscar! ... You didn't think I wasn't going to do this, did ya?" exclaimed a singing Billy Crystal during the 84th Annual Academy Awards.

Hosting for the ninth time, Billy pulled out all the standard Crystal jokes -- and even snuck in a few surprises, including a Justin Bieber cameo and a GOP presidential nomination crack.

You can check out all of Crystal's highlights from this year's Oscar's in the video above.

Head here for complete coverage of the 84th Academy Awards.

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