Shirtless Sam Jaeger plays the role of Joel Graham in the show Parenthood. Jaeger is also known as the character Matt Dowd in the show Eli Stone.
Shirtless Dax Shepard is in the show Parenthood as plays Crosby Braverman. Shepard did TV guest appearances and film work until he landed this role in 2010. He is in the film Outrun as Charlie Bronson, coming out in 2012.
Its hard for me to envision Peter Krause in any role other than Nate Fisher on Six Feet Under, but he seems to be making a splash in the reincarnated Parenthood. Krause plays Adam Braverman on NBC’s new comedy.