Justin Bieber guest-starred on the September 2010 premiere of CSI as Jason McCann. He'll reprise this role in February 2011.
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CSI Season 11 Episode 1 Quotes

Haskell: I want Ray to live a long time so he thinks of me every time he unzips his pants
Brass: Yeah, he will remember what a putz you are.

Brass: You know what this button does.
Ray: Morphine clouds my thinking.