David Cassidy, "The Cosby Show" Reunion on Oprah Show

David Cassidy and the cast of the hit show "The Cosby Show" were the surprise guests on the Oprah Winfrey Show Tuesday.Oprah did not tell her studio audience of either guests prior to their arrival Tuesday.For the reunion with the children from "The Cosby Show", they recreated an exact replica of the famous living room from the show.

The Cosby kids stopped by for a reunion (minus Lisa Bonet, who just had a baby): Sabrina Le Beauf (Sondra), Malcolm-Jamal Warner (Theo), Tempestt Bledsoe (Vanessa), Keisha Knight Pulliam (Rudy) and Raven-Symone (stepgrandaughter Olivia).David Cassidy was on the show, promoting his new album: "David Cassidy Dance Party Remix." Cassidy, along with producer Craig J, created club-rocking remixes of Partridge Family classics, such as "Come On Get Happy," "I Think I Love You" and "I Can Feel Your Heartbeat."