Jeremy Piven, 43, won an Emmy for his some-say typecast performance as douchebag agent Ari Gold on Entourage. He wasn’t as lucky after the awards ceremony when he tried to put the moves on actress Hayden Panettiere, 19, at a party. She wasn’t having his feeble attempts and got out of there as soon as possible:

Jeremy chatted up Heroes hottie Hayden Panettiere – who, at 19, is 24 years younger than Jeremy. “He was trying to be charming and kept saying he ‘wanted to show her around town,'” says a partygoer. “But Hayden soon excused herself and escaped.”

[From Star Magazine, print edition, October 6, 2008]

It’s possible that Star doesn’t have their information right or that Piven was just trying to be friendly in his skeevy way. Given his reputation though, that’s unlikely. Just about everyone knows that Hayden is in a serious relationship with her co-star Milo Ventimiglia, but that didn’t stop Jeremy.

Piven also played the drums at the HBO post-Emmys party, probably in an attempt to look nonchalant after he got dissed by Panettiere.

Here’s Piven at the party telling his celebrity friends that he’s going to do a stint on Broadway. He’ll be in a revival of David Mamet’s Speed-the-Plow which starts performances October 3. (NSFW language.) Piven will appear in RockNRolla, which is out in limited release next month, and has three films in the works for next year.

Jeremy Piven is shown at the Emmy Awards on 9/21/08. Hayden Panettiere is shown at a Declare Yourself event on 9/24/08. Credit: PRPhotos.