That'll leave a mark!
10 Things I Hate About You actor Andrew Keegan was tasered by police after officers visited the scene of a party he was throwing in Marina Del Ray, Calif., Saturday.
VIDEO: The week's top star headlines
Keegan, 32, was pulled aside after reportedly receiving a noise complaint, and TMZ.com reports the actor became "very aggressive" when cops asked him to turn his music down.
Though TMZ reports Keegan was not arrested, the police altercation left the actor -- and his party guests -- reeling.
PHOTOS: Stars who've had trouble with the law
"He was tasered right in front of me," one eyewitness tells Us Weekly. "Oh my God, it was so awful."
Another partygoer tells Us LAPD helicopters were circling the Venice Beach area as 15 police officers descended on the residence.
PHOTOS: This week's top celeb pics
"He was throwing a block party [and I] saw it happen," says the witness of Keegan, who also appeared on The WB's 7th Heaven. "You could tell he was in pain."
Get more Us! Follow us on Twitter, Friend us on Facebook, Subscribe to Us Weekly
We look at the top 5 biggest hairdos in hollywood.
Check out the hottest looks that Kim Kardashian has donned since becoming a mom.
From Tori and Dean to Kendra and Hank, get the scoop on this reality TV couples who are struggling.
Fergie shares sexy behind-the-scenes photos from her music video shoot on today's Celebs Gone Social.
Hilary Swank, Emma Stone, and Tilda Swinton are all Fashion Offenders this week.
Miley Cyrus, Nikki Reed, and Jennifer Lawrence all get an F on this week's Fashion Offenders.
© 2014 Whalerock Industries