4. Anthony Stewart Head
Most folks know Anthony Stewart Head from his roles on BBCs Merlin and Buffy the Vampire Slayer. As it turns out, everyones favorite British librarian\Watcher has a multi-faceted musical history as well. Fans are familiar with his singing abilities from his performance in the musical episode of Buffy, Once More With Feeling. Heads career outside of this is widely varied, and includes roles in Godspell and the 1990 West End Revival of The Rocky Horror Picture Show, as well as guest vocals on the British band Red Boxs The Circle and the Square album. His version of the song Sweet Transvestite from Rocky Horror was released as a single by Chrysalis Records. In 2002, Head released an album in collaboration with musician George Sarah entitled Music For Elevators. His most recent musical performance came in the 2008 movie Repo! The Genetic Opera. http://youtu.be/9Uq2vaP2cLU
(Sources: http://www.lewisslade.com/redbox/GINNYCLEE_QA.html, Wikipedia.com)