Jimmy Kimmel is the president of the Ackles-manics club!

Supernatural stud Jensen Ackles laughs up a storm on Jimmy Kimmel Live! on Thursday night. The 29-year-old Texas native co-stars alongside fellow Texan hunk Jared Padalecki on the eerie sci-fi series on The CW.

Apparently, Jensen has really pretty eyes. Jimmy’s other guest, Latino actress Rosie Perez asked Jensen, “Do you curl your eyelashes?”

Watch the video below of Jensen Ackles on Jimmy Kimmel Live!

An all-new Supernatural episode (”Road Kill”) airs tonight, March 15 @ 9PM ET/PT on The CW.

Heroes hunk Milo Ventimiglia makes a guest appearance on Jimmy Kimmel Live! on Wednesday evening.

Milo, 29, gives some background on being fourth generation: “My father’s family is Sicilian. My mom is English, Irish, Scottish, French, Cherokee, and Black Foot Indian. I’m American!”

Milo even shares about his first paying job in Hollywood — a stint on the Fresh Prince of Bel-air alongside Will Smith! Does anybody happen to have that clip of Milo on Fresh Prince? Please share!

Watch the video of Milo Ventimiglia on Jimmy Kimmel Live! below!

Former American Idol Clay Aiken makes a hilarious Valentine’s Day appearance on Jimmy Kimmel Live! on Wednesday night, singing off phrases from pastel-colored candy hearts like “Love Me,” “Fax Me” and “You’re A Tiger!” ROAR!

Sweetheart Clay brought along a huge balloon heart for Jimmy for V-Day and a t-shirt with whowse face on it? Clay’s, of course! (Clay wore a t-shirt with Jimmy’s face on it to the show.)

Clay did show up with a new haircut and admitted to having some work done on his teeth. He pointed out his “blindingly white” teeth and said he had his front top two teeth fixed (they were slanted in before). Clay will also be doing UNICEF work in the near future…

Scalpel sharp Justin Chambers plays smart-ass surgical intern Dr. Alex Karev on ABC’s hit drama Grey’s Anatomy. But in the March 2007 issue of Men’s Health, TV doc Justin swaps his scrubs for strong suits. Check out Justin Chambers‘ Men’s Health photo shoot below!

Justin, 36, also made an appearance on Jimmy Kimmel Live! this past Thursday. He chats up his kids a lot and their rock ‘n’ roll band called “NYLA”. (Um, wasn’t that Britney’s failed NYC restaurant?) What I would love to see is his entire family (wife + 5 kids) in a photo shoot together. Yes yes?

Last season’s American Idol runner-up Katharine McPhee made her first late night talk show “couch interview” on Jimmy Kimmel Live on Wednesday. Her appearance on Larry King Live tonight has been rescheduled to tomorrow. Larry will instead be interviewing Anna Nicole Smith’s family in light of recent events.

Watch Katharine McPhee’s interview on Jimmy Kimmel Live here.

Pictured below: Comedian Dane Cook