Mame...with Lucille Ball in the role of Mame Dennis for the film version. 
Here's a toughie:
In a parody of the Bing Crosby/David Bowie duet of "Little Drummer Boy/Peace on Earth", Late Night with David Letterman had which long-haired, politically-vocal rocker on to "sing a duet" with Dave of "The Christmas Song"?
(The words "sing a duet" are in quotes because someone else provides Letterman's voice and whenever they showed him "singing" there were potted plants or Christmas ornaments in front of his mouth.)

Here's a toughie:
In a parody of the Bing Crosby/David Bowie duet of "Little Drummer Boy/Peace on Earth", Late Night with David Letterman had which long-haired, politically-vocal rocker on to "sing a duet" with Dave of "The Christmas Song"?
(The words "sing a duet" are in quotes because someone else provides Letterman's voice and whenever they showed him "singing" there were potted plants or Christmas ornaments in front of his mouth.)
