On today's This Week In Youtube #72, Beyonce and Lady Gaga team up in Video Phone, Seacrest gets shut down by Rob Pattinson's publicist, and Kool Keith joins forces with Tom Waits! Join Lon Harris and Shira Lazar as they team up to bring you this week's hottest videos on the web!

Sarah Palin on Oprah - part 1: http://www.youtube.com/watch?v=3sIeMg_eoyI

Obama bows to Japanese Emperor: http://www.youtube.com/watch?v=3kyD_e0Y7FQ

N.A.S.A.: Tom Waits + Kool Keith, Spacious Thoughts: http://www.youtube.com/watch?v=aiJ2E0xGOv8

Rob Pattinson's Publicist Shuts Down 'Robsten' Question: http://www.youtube.com/watch?v=mEXMtBgI_U8

Ric Flair attacks and bloodied Hulk Hogan at Australian Press Conference: http://www.youtube.com/watch?v=Fj3OvBjJ1yU

Skateboarding dog plays video game: http://www.youtube.com/watch?v=FdgO3cEYYTw

Pink Glove Dance: http://www.youtube.com/watch?v=OEdVfyt-mLw

Microsoft Store - Breaks Out Into Song: http://www.youtube.com/watch?v=TSAXEVXvNz8

Microsoft Jerry Seinfeld Bill Gates Shoe Circus Commercial: http://www.youtube.com/watch?v=rIjNJZpRtj8

Styl'd's Tara Terrorizes: http://www.youtube.com/watch?v=1-UGT-wjmBw

French hotel lets guests live like hamsters: http://www.youtube.com/watch?v=M3T3vzO1_yQ

Modern Warfare 2 Sucks!!!!!: http://www.youtube.com/watch?v=mQpcO8x6NNY

Beyonce ft. Lady Gaga - Video Phone: http://www.youtube.com/watch?v=Dn0LOxP_g4s

Behind The Spoof: The iJustine Story: http://www.youtube.com/watch?v=DZu50q8cHNQ

What's So Funny?: Whatssofunny.yahoo.com (less info)