Caught! Mellow Gerard Butler Has Ladies "Lining Up"

Jennifer Aniston's Cabo companion was looking fine, keeping his keel even at a Beverly Hills fundraiser

Gerard Butler made a cameo at the Artists for Peace & Justice Fundraiser at the Beverly Hills Hotel last night.

Jennifer Aniston's Cabo companion was looking fine in a black suit at Bar Nineteen 12, and not exactly hurting for female company.

"He had women lining up to talk to him," dishes our eyes inside the posh hotel. "He turned on the charm and was really nice with anyone who approached him—but it seemed almost forced."

Our source claims Gerry, the notorious ladies' man, would flirt with any gal that came to him but wasn't exactly on the prowl.

"You could tell he just wanted to hang out with his friends there. He wasn't drinking, and was really mellow when he could be."

Interesting. Is that because he could actually be ready to take it to the next level with Jen? Uh...no, we seriously doubt it. Perhaps we have another Megan Fox on our hands. You know, plays into his media image (huge player) when he knows he's being watched.

We gotta say, we like tame Butler! Just don't get too boring on us, OK?

Another studmuffin totally swooped up at the soiree was...

Jon Hamm, who was hand in hand with his 11-year (and counting) girlfriend, Jennifer Westfeldt. Lucky bitch!

The Mad Men star looked dapper as always, dressed to kill in a black suit and black tie, but still had that scruff all over his face. Not sure how we feel about that, but who cares. It's Jon Hamm!

Jon was all smiles as his lady in red was at his side the entire night, mingling with the likes of Gerard and Olivia Wilde, who was also there.

A dude entirely out of the Hollywood scene recently was...

Cam Gigandet, who was spotted at the Barnes & Noble at L.A.'s The Grove shopping center.

The Twilight hunk and new father looked sexalicious in a heavy-looking black leather jacket and jeans.

"He was browsing the music section," spills our literate eyes. "He was looking at the opera books for a while before making his way up to the third floor."

Perusing the baby section maybe? The yummy dad was headed that way as he flew under the radar at the usually celeb-packed store.

Cam is currently in the middle of filming Burlesque with Christina Aguilera, so maybe he was just getting his research on.