A new comedy star is emerging and her name is Melissa McCarthy. Also today: the glorious return of Little People, Big World, catching up with the Ribisis, and an exciting new gay movie.

After the Washington Post stated that he was a member of The Roots in a case of mistaken identity, Giovanni Ribisi got the chance to jam with the band—and his doppelganger, bassist Owen Biddle—last night on Late Night.

Owen Wilson, Woody Allen and Carla Bruni make a movie. Ben Affleck does a movie too—about wife-swapping. Steven Segal is back. Zac Efron is rich. Our last significant digit must be five or greater, because we're rounding up.

A tipster tells us an interesting Scientology rule — members of the church who appear in movies must always do so in pairs. Which, if true, raises a fun holiday game called 'who's the other Scientologist in...'

Model/actress/designer Milla Jovovich turns 34 today. Hardball host Chris Matthews is turning 64. Penthouse founder Bob Guccione is 79. Director Peter Farrelly (There's Something About Mary, Dumb and Dumber) turns 53. Pete Briger, the president of Fortress Investment Group, is 46. Actor Giovanni Ribisi is turning 35. R.E.M. bassist Mike Mills is turning 51. Actor Bill Pullman is 56. Ultimate fighting champion Chuck Liddell is 40. And actor Eugene Levy turns 63 today.

1/17 — I was with a group of friends getting my karaoke on at Amagi in the Gower Gulch saturday night. In comes GIOVANNI RIBISI and his crew of beautiful people. Giovanni and crew were very supportive of the other singers, high-fiving and giving compliments. One of his friends sang an amazing version of "That's Life." Giovanni even sang "Oye Como Va." Couldn't help but think about The Other Sister, however. [Hollywood PrivacyWatch is written by and for Defamer readers; send your sightings to tips@defamer.com.]

PrivacyWatch celebrity sightings are submitted by the loyal readers of Defamer. We'd like to remind you that this feature is powered by you, so if you want to see more installments of PrivacyWatch, then all you've got to do is to send us your sightings. Submit yours to tips[AT]defamer.com (please put "sighting" or "PrivacyWatch" in the subject line so we don't lose them) and tell everyone about the time you saw Britney Spears huffing smokes while eating poolside chicken fingers.

Attention Defamer operatives: You have been slacking on your PrivacyWatch duties! Today's installment is verging on pitiful. We command you to wander the streets until you successfully spot a celebrity, then rush back to the nearest keyboard-equipped telecommunications device to breathlessly type up your dispatch. Submit yours to tips[AT]defamer.com (please put "sighting" or "PrivacyWatch" in the subject line so we don't lose them), so that everyone can read about how you Giovanni Ribisi needs Magnum condoms.

Judging by the ensembles worn by the Scientologist-heavy crowd at one of LA Fashion Week's recent shows, all those interrogations via E-meter and "detox programs" required to be a full-fledged Clear do not include any lessons on how to dress oneself. At Smashbox Studios yesterday, Giovanni Ribisi's sister Marissa debuted her Whitney Kros clothing line, and all a whole smattering of outed B and C-List Scientologists showed up to support the Scientologist designer. There was good ole Tom Cruise Rejectee Erika Christensen dressed in a shapeless fiery muumuu, Juliette Lewis in Hammer shorts, and Jenna Elfman wearing some kind of '80s era sweater that looks like it was hoisted from the Breakfast Club wardrobe department. More pictures, and our ideas on why the "A-List" Scientlebrities weren't there to support the cause, after the jump.

PrivacyWatch celebrity sightings are submitted by our readers, and are posted several times a week, so send them in often. Who knows? They may give you the upper hand in your ugly, ongoing custody battle. Submit yours to tips[AT]defamer.com (please put "sighting" or "PrivacyWatch" in the subject line) and tell everyone about the morning you spotted John Mayer waiting on the steak to cook at Mastro's.