From Wikipedia, the free encyclopedia.   Wendie Jo Sperber (September 15, 1958 – November 29, 2005) was an American actress, best known for her performances in the films I Wanna Hold Your Hand (1978), Bachelor Party (1984) and Back to the Future (1985) as well as the television sitcom Bosom Buddies (1980–1982). Description above from the Wikipedia article Wendie Jo Sperber , licensed under CC-BY-SA,full list of contributors on Wikipedia.