Will the mystery guest sign in, please? "The Apprentice's" Bill Rancic has been checking into hotels under the nom-de-celebrity Chandler Bing. Now that the word is out, he'll have to come up with something new. Might we suggest Donald Manigault- Kwame? Or maybe he'll be inspired by the following aliases, which celebrities reportedly have used to check in:

BRITNEY SPEARS:

Ivana Hump

BRAD PITT AND JENNIFER ANISTON:

Mr. and Mrs. Ross Vegas

OZZY OSBOURNE:

Prince Albert

CHARLES BARKLEY:

Homer Simpson, Fred Flintstone

CHRIS ROCK:

Slappy White

JOHNNY DEPP:

Mr. Stench

DON JOHNSON:

Mr. Head

SYLVESTER STALLONE:

Johnny Friendly

TROY AIKMAN:

Hell Astray

EDDIE MURPHY:

Joe Schmo