Jemison was born in New Orleans, Louisiana, the son of Rosalie (née Centanni) and Edward Francis Jemison.[4] He is of Irish and Italian descent. He was raised in Kenner, Louisiana and attended a Catholic secondary school, Archbishop Rummel High School. He graduated from Louisiana State University where he was a member of the Delta Chi Fraternity.[3][5]
He has made multiple appearances on Late Night with David Letterman, and starred in television pilots for NBC and ABC.
Jemison is a veteran of the