Parties! The style, stars and scoop from Hollywood's hottest events

Past American Idol winner Carrie Underwood and Desperate Housewives star Teri Hatcher both belted out songs during the special show. Hatcher joined fellow small screen stars James Denton, Greg Grunberg and Bonnie Somerville—known collectively as Band From TV—to sing Underwood's "Before He Cheats." As for Underwood, the singer said it was just nice to be back on the Idol stage. "Every time I turn around, there are people that I'm like, 'Oh my gawd! I haven’t seen you in forever!'" the Grammy winner marveled backstage.

Find out more about the charities featured on Idol Gives Back.