Live from the John Lennon Educational Tour Bus at SXSW, it’s the Trending Now Top 5 Countdown for March 14, 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 Louis CK silencing a girl in his audience to deadmau5 and Imogen Heap’s “Telemiscommunications” collaboration, we have you covered right here on What’s Trending.

#5: Real People, Fake Arms with Steve Carrell and Justin Timberlake

#4: Louis CK Silences Girl in Audience

#3: deadmau5 and Imogen Heap – Telemiscommunications

#2: Carlsberg puts friend to the test

#1: Taylor Swift – 22

For daily YouTube Trends and celebrity interviews, SUBSCRIBE and watch us every weekday at noon PT/3 pm ET on YouTube!