Tim Allen, 8-year-old opera singer Gwyn Mackenzie, Carrie Underwood26Jaime Pressly, Adventurer Bear Grylls, Cirque du Soleil: The Beatles - LOVE38Denzel Washington, Catherine O'Hara, Jerry Lee Lewis with Kid Rock42Amazing Animals With Julie Scardina, Ellen Pompeo, Nelly Furtado43Former President Jimmy Carter, Edward Norton, Panic! At the Disco56Will Smith, Pamela Anderson, Richard Roeper, The Blind Boys of Alabama63Abigail Breslin, Amazing Animals With Julie Scardina, Christina Aguilera88Simon Cowell, Randy Jackson & Ryan Seacrest, Tiki Barber, Silversun Pickups100Bill Maher, skydiving accident survivor Michael Holmes, Rodney Atkins101Jeff Foxworthy, Charlie Engle, Kevin Lin & Ray Zahab, Dierks Bentley121Cameron Diaz, 6-year-old piano prodigy Ethan Bortnick, Nelly Furtado153Amazing Animals With Julie Scardina, Gov. Bill Richardson, Miranda Lambert154Dominic Monaghan, "American Idol" finalists Melinda Doolittle, Blake Lewis & Jordin Sparks, Taylor Hicks155Felicity Huffman, bizarre food expert Andrew Zimmern, Dolores O'Riordan158Kevin Costner, "American Idol" winner Jordin Sparks, Daniel Tosh163Bill Cosby, Charlie Gilpin, Aspen Nelson & Bryant Ashton, Avril Lavigne174Samuel L. Jackson, 17-year-old reptile expert Corbin Maxey, Jesse Malin177John & Elizabeth Edwards, Maz Jobrani, The Red Jumpsuit Apparatus180Hank Azaria, David Hasselhoff, Sharon Osbourne & Piers Morgan, Daddy Yankee204Sen. John McCain, Bill Hader, Ben Harper and the Innocent Criminals211Jonah Hill, Michael Cera, Christopher Mintz-Plasse, Jarod Miller, Wilco213