Sean Faris (who'll be 30 later this month) was the DeCoteau dude for March of 2010. That was for his featured role in The Brotherhood 2: Young Warlocks. He's done well for himself since. David sure knows how to pick 'em. The source for the near-nekkid wallpaper above, btw, was from a male cancer PSA campaign. I also discovered that his first role on film was a gay one. The movie, apparently, was never released. See below for which one.
I didn't watch Days of our Lives during 1997-2000, when Jensen got his first major notice. I only followed Dark Angel sporadically (I think it was opposite another show I was more interested in), so missed him there. Same with the Creek. So I guess he first came to my notice as Lana's boyfriend on Smallville. Jensen was the producers' first choice for the role, since they'd known him before the show started, having almost gotten the Clark Kent part. Jensen was a regular for only a season before he landed one of the leads, gravelly-voiced older brother Dean, on Supernatural, where he continues to this day. The weird thing to me is that Jensen originally went for the role of Sam. I just can't wrap my head around the thought of him as Sam and Jared as Dean. I don't think it would have been the awesome show it is if that hadn't happened.
I'm wondering what Jensen will do once Supernatural's over. He's done OK in movies like My Bloody Valentine. He also directed a few eps of Supernatural, and did so rather well, so he can always go in that direction. A number of the Star Trek actors have gone on to successful careers in that field, especially the Voyager folks.
To see how pretty Jensen used to be (as opposed to the ruggedly handsome dude he is now) see here.