Colin Farrell was a guest on Letterman Friday night. I’ve been dying to report on these sexy photos of him outside the studio with his shirt half open. He looked delectable as usual, and was promoting the Fright Night remake he stars in, which is out in the US next Friday, August 19. On the show, Farrell mentioned his two boys, Henry, nearly 2, and James, 7. (Both are from previous relationships with different women, but it’s not like Farrell talked about that at all.) James has a rare genetic condition called Angelman syndrome, which is characterized by motor, intellectual and speech delays and a positive affect. Farrell has discussed his son’s condition in the past, and said that he is blessed to have him in his life. In 2007, he said “I have never thought of my son as being someone with a disability. It goes back to special needs and what is a disability and what isn’t.” On Letterman, he addressed the need for more funding to research the condition and said that a doctor has cured the condition in mice. Here’s more:

Colin Farrell appeared on Late Show With David Letterman last night to promote his upcoming movie, Fright Night, but also took a little time to give a shout out to CureAngelman.org and revealed that one of his sons has been diagnosed with Angelman Syndrome.

Colin has two sons James, 7, and Henry, almost 2, and briefly discussed his family with David Letterman.

“James, just a quick shout out if I can, James has a condition called Angelman Syndrome and it only affects one in 30,000 children, they say,” Colin said on Late Show. “So there’s not that much funding because it doesn’t benefit pharmaceutical companies, of course.”

The actor asked for anyone to help by visiting CureAngelman.org to help donate and then discussed a bit more about his son and how he was diagnosed.

“It was actually when a doctor saw how happy he was,” Colin explained. “He was like, ‘Does he always smile this much?’”

James started walking just short of his 4th birthday and doesn’t have any verbal speech, but Colin made sure to say that his boy is a “a really happy boy.”

[From OK Magazine]

For as much as Colin flits around to different women, he sure seems like a caring and devoted father. He’s also giving some invaluable attention to this cause.

Look at how shy Colin looks outside the studio with his hands crammed in his pockets. He’s doesn’t look too comfortable with the crowd. He also seemed a little nervous on the show.