Noah Wyle

From Muppet Wiki

Noah Wyle is a TV and film actor, who is probably best known for his role as 'Dr. Carter' on ER. He appears as "a caring doctor who helps 9-year-old Gabi deal with the fears she has when her mother goes into the hospital for surgery." (EKA: Episode 3526)

He also appeared with Big Bird in his nest in a celebrity version of "Sing".