Live from the John Lennon Educational Tour Bus at SXSW, it's the Trending Now Top 5 Countdown for March 13, 2013 – where we gather the hottest and most outrageous must-see YouTube videos hitting the web today and send them all straight to your screen. It’s like watching the best of YouTube, only faster!
From Overly Attached Girlfriend's appearance on "Late Night with Jammy Fallon" to Pentatonix and Lindsey Stirling's Imagine Dragons cover, we have you covered right here on What’s Trending.
#5: Mets Bucket Hat Guy Meets Overly Attached Girlfriend
#4: Mike Tompkins and Watsky - Suit and Tie Cover
#3: Radioactive (Imagine Dragons Cover)
#2: Epic Rap Battles of History: Tesla vs. Edison
#1: Pepsi Max and Jeff Gordon Present "Test Drive"