Trivia- Which one of these guys was not a gameshow host

[noztnac]

Which one of these guys was not a gameshow host?




http://i126.photobucket.com/albums/p101/terrinh73/RD5.jpg

http://upload.wikimedia.org/wikipedia/commons/thumb/a/ab/Mitt_Romney_2007_profile_portrait.jpg/440px-Mitt_Romney_2007_profile_portrait.jpg

http://www.bywayentertainment.com/images/BobEubanks1.jpg

http://www.johnfullerton.org/images/BB%20Pics/PC3.jpg