Justin Timberlake Joins Jimmy Fallon

On Friday night, triple-threat Justin Timberlake stopped by “Late Night with Jimmy Fallon,” presumably to talk about his new movie “In Time” — but even Fallon knew that’s not what everyone wanted to see.

In the previous two installments of “History of Rap,” Fallon and Timberlake did a brief set-up to make it look like the performances were spur-of-the-moment, but this time Fallon didn’t even bother with the prelude before the duo launched into hip-hop classics from Coolio, the Beastie Boys, The Fugees, OutKast, Sir Mix-A-Lot, and Naughty by Nature.

I don’t know what was better — their amazing duet or the sight of a couple hundred white people waving their arms back and forth to “Hip Hop Hurray.”