Mary Murphy, Michael Kors, Michael Chiklis, Miley Cyrus, Minnie Driver, Nigel Lythgoe, Peyton Manning, Reese Witherspoon, Ricki Lake, Rob Schneider, Robin Williams (as "Bob" the "Russian Idol" from Narodniy Artist), The Rock, Roselyn Sanchez, Ryan Sheckler, Sarah Silverman, Selma Blair, Sheila E., Snoop Dogg, So You Think You Can Dance Season 2 and 3 finalists, Teddy Reilly, Teri Hatcher, Toby Keith, The Game, The Clark Brothers, Cole and Dylan Sprouse, Triple H, Tyra Banks, Vanessa Hudgens, Victoria Beckham and Whoopi Goldberg. Ellen DeGeneres was originally going to reprise last year's co-hosting duties but had to pull out due to "a personal production pressure" according to producer Nigel Lythgoe. She still appeared during a short segment. Performances Idol Top 8 sang Rihanna's "Don't Stop the Music" as past So You Think You Can Dance finalists performed various dance routines Snoop Dogg and Charlie Wilson performed "Can't Say Goodbye" Teri Hatcher (of Desperate Housewives) performed Carrie Underwood's "Before He Cheats" with Band from TV Miley Cyrus performed "Good and Broken". Fergie performed her single "Finally" with John Legend playing the piano Heart performed "Barracuda" and were joined by Fergie Annie Lennox played the piano and performed "Many Rivers to Cross" Carrie Underwood sang George Michael's "Praying for Time" Jordin Sparks performs with Chris Brown in "No Air" and presented Platinum awards for sales "Tattoo" and "No Air" (over 1,000,000 units each) and Gold award for the Jordin Sparks album (over 500,000 units). Gloria Estefan performed "Get on Your Feet" featuring Sheila E. on percussion, as well as the So You Think You Can Dance finalists and professional dancer Fabienne Liechti Idol Top 8 performed "Seasons of Love" from the musical RENT Miley Cyrus performed once more, singing "See You Again" Daughtry performed "What About Now" in a video of their trip to Uganda Mariah Carey performed "Fly Like a Bird" with Randy Jackson on bass guitar The Top 8 closed the show with the Christian anthem "Shout to the Lord", together with the So You Think You Can Dance finalists and professional dancer Fabienne Liechti In a sequel to the previous year's "Staying Alive" video, a group of celebrities lip synced to The Monkees' "I'm a Believer" during Thursday's results show. Elimination The top 8 results show was held on Thursday, the day after the Idol Gives Back special. Michael Johns, Syesha Mercado, and Carly Smithson were in the bottom 3. Johns