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JENNIFER ANISTON returned to TV tonight as a "surprise" guest on the season finale of Lady O's ABC reality show, OPRAH WINFREY's "Big Give."

The big-screen star thanked the contestants and presented them with surprise cash gifts of $10,000, which in true "Rachel" fashion, she then re-thought and tripled: "That just felt too good. I personally would like to triple it. So we're going to go $30,000. Guys, thank you for doing this and inspiring everybody."

STEPHEN PALETTA also received a grand prize of $1 million (half to keep and half to give away) from Oprah after completing a giveaway challenge with zero funds. "I'm in shock," he said. "It was such an incredible honor and privilege to be part of this show and to be chosen as the biggest giver with all these wonderful people."

Jen joins a long list of several celebs who lent their star power to the show. JADA PINKETT-SMITH, NATALIE COLE and Oprah's BFF, GAYLE KING, were on the April 6 episode, while JOHN TRAVOLTA appeared on the April 13 show. Others who have also taken part include ANDRE AGASSI and TONY HAWK.