Bob Sarlatte
Bob Sarlatte is an American actor, comedian and sports announcer known for such films and television series as Star Trek IV: The Voyage Home, EDtv and The David Letterman Show. Sarlatte was also the on-field stadium announcer for 30 years for the San Francisco 49ers football team. Description above from the Wikipedia article Bob Sarlatte, licensed under CC-BY-SA, full list of contributors on Wikipedia.
