It's the Trending Now Top 5 Countdown for December 4, 2012 - 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 an very unexpected "The Hobbit" parody to Led Zeppelin on David Letterman, we have you covered right here on What’s Trending.
#5: The Hobbit: An Unexpected Parody
#4: Reading Rainbow Remixed | In Your Imagination
#3: David Letterman - Led Zeppelin's Viking Sex Music
#2: Pop Danthology 2012 - Mashup of 50+ Pop Songs
#1: DMX sings Rudolph the Red-Nosed Reindeer