5:06am PT by Aaron Couch
Jimmy Fallon Plays 'Fifty Shades of Grey' Prank on The Roots (Video)
Jimmy Fallon played a little prank on his The Tonight Show house band, showing The Roots the much-anticipated trailer for Fifty Shades of Grey — but with an unexpected twist.
(No, it's not the S&M that scared them. Watch to find out.)
PHOTOS Summer TV Preview
Speaking of potential blockbusters, Guardians of the Galaxy star Chris Pratt dropped by The Late Show, where David Letterman uncharacteristically gushed over his guest. At one point, the host had to stop himself from continuing to talk about how great he thought Guardians was.
And here's something that probably won't ever happen again: Daniel Radcliffe cut the hair of a complete stranger. Fallon may have celebrity beer pong tournaments, but Jimmy Kimmel sometimes manages to have even stranger ideas.
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