Photos: Cruise, Degeneres save Yahoo demo

Gremlins did in the Yahoo Go TV demo during Semel's keynote speech at the Consumer Electronics Show on Friday, putting the Yahoo CEO and fellow executives in a bind. Semel put an end to the ad libbing by calling Hollywood star Tom Cruise on stage to entertain the crowd. "I guess if you're going to have a demo glitch (there is no) better way to follow it up than with Tom Cruise," Semel said.

Comedian Ellen DeGeneres shows some of her personal photos, including shots of her with Microsoft's Bill Gates, Oracle's Larry Ellison, Motorola's Ed Zander, Otellini and Semel.

Intel CEO Paul Otellini shows off a "concept" handheld PC he called "Slide."

Semel chats with actor Cruise on stage at CES.

During Semel's keynote, DeGeneres cracks jokes and talks about her technology challenges.

Semel's other celebrity keynote guest was comedian Ellen Degeneres, seen here offstage with Cruise and his girlfriend, actress Katie Holmes.