The Top 25 Hottest Irish Guys

Robert Downey Jr. is another bad boy gone good (which let's face it, is every girl's dream). His father, Robert Downey, Sr. is of half Irish and half Russian Jewish ancestry and his mother is of German and Scottish descent. He got his big break on SNL in 1985 but was fired due to cast overhaul just a year later. He started abusing drugs from 1996 to 2001 and was arrested several times during the troublesome period. He made a huge comeback after five years with films like "Gothika," "Good Night, and Good Luck," "Kiss Kiss Bang Bang" and, of course, the big blockbuster hit "Iron Man." In an interview with Sunday World magazine, Downey admitted to having "Irish blood coursing through my veins. Every time I work in the UK, I'm always planning on a long weekend over there but it never works out."

Here's what does work out:

Robert Downey Jr. lying naked on a bed.

Robert Downey Jr. trapped lying naked on a bed.

Whether he's Marky Mark, Mark Wahlberg or Mark Robert Michael Wahlberg (his full name), Mr. Wahlberg is a tough-looking beast. Don't let his Calvin Klein underwear charm mislead you, the guy is an animal that can bite. Wahlberg is of Irish, English, Swedish and French Canadian ancestry and has gotten in trouble 20-25 times with the law growing up. He developed an addiction to cocaine when he was 13 and was thrown into jail when he was 16. Since then he's cleaned up and had an impressive film career, most recently in the Oscar award-winning film "The Fighter."

Flaunting his flawless physique HERE .

'Bout to have his underwear ripped right off of him HERE .

Patrick Dempsey, or otherwise known as McDreamy on Grey's Anatomy, is a beautiful, beautiful human being. He's like a glossy stallion. Thick gorgeous hair, perfect white teeth and that sparkle things he does with his eyes. Seriously, look. Every single picture has a dang sparkle! Talk about Irish luck.

Dempsey was born in Maine but has Irish ancestry. One in which he's very proud of and even named his children with noted make-up artist Jillian Dempsey in honor of. His twin boys both sport classic Irish names: Sullivan Patrick and Darby Galen. Sullivan is practically an icon in the world of Irish names and Darby originates as an English name for someone from the city of Derby, Ireland.

Looking dapper at the Golden Globes HERE .

Tell me, how can anybody resist THIS look.

If there's something veteran actor and ladies' man George Clooney doesn't lack, it's that Irish charm. He's got his paternal great-great-grandparents, Nicholas Clooney and Bridget Byron, to thank for that. The two immigrated to the U.S. from Ireland and Clooney was raised in a strict Irish-Catholic household.

His first major role was as Dr. Doug Ross on the hit NBC drama ER. He was dreamy then as he is now. After leaving the show, Clooney also starred in other commercially successful projects--this time, film--such as "The Perfect Storm," "O Brother, Where Art Thou?" and "Ocean's Eleven," to name a few. Dozens and dozens of women have fallen for his disarming good looks and charismatic personality, and the fact that he's heavily involved in humanitarian work doesn't hurt either.

Looking foine at a movie premiere HERE .

Watch the sun set on his body HERE .