Best of 2010

Click Here: The Best Internet Memes of 2010

From the Bed Intruder and "Sad Keanu" to the Double Rainbow Guy, see what kept you logged on

50 CENT & KEENAN

Keenan Cahill's shtick is simple: He stands in front of his computer and lip-synchs pop hits like "Teenage Dream" and "Like a G6." The 15-year-old has garnered nearly 100 million views on YouTube – and apparently, some of his fans are watching in da club! In this clip, debuted on Chelsea Lately, Cahill got a special guest star while performing his version of 50 Cent's "Down on Me" – Fiddy himself!