Patrick "McDreamy" Dempsey of Grey's Anatomy and Jennifer Love Hewitt of Ghost Whisperer are America’s Sexiest TV Stars according to TV Guide Magazine. In its second annual Sexiest Stars issue (May 2008), TV Guide highlights twenty-four television personalities who exude hotness. Check out the complete list after the jump... TV Guide Sexiest Stars 2008:

Patrick Dempsey (Grey’s Anatomy)

Jennifer Love Hewitt (Ghost Whisperer)

Vanessa Williams (Ugly Betty)

Peter Krause (Dirty Sexy Money)

Jon Hamm (Mad Men)

Mary-Louise Parker (Weeds)

Jared Padalecki (Supernatural)

Olivia Wilde (House)

Josh Holloway (Lost)

Katee Sackhoff (Battlestar Galactica)

Taye Diggs (Private Practice)

Julianne Hough (Dancing with the Stars)

January Jones (Mad Men)

Yunjin Kim (Lost)

Hayden Panettiere (Heroes)

Ed Westwick (Gossip Girl)

Justin Chambers (Grey’s Anatomy)

Eva Longoria (Desperate Housewives)

Leighton Meester (Gossip Girl)

Chace Crawford (Gossip Girl)

Zachary Levi (Chuck)

Yvonnne Strahovski (Chuck)

Omar Epps (House)

Alex O’Loughlin (Moonlight)