Ryan Covert at 2009-12-17 12:23:12:

So long as we're goin' down this rabbit hole -- here's another:

GHOSTBUSTERS theme song accapella.

http://www.break.com/index/awesome-ghostbusters-multitrack.html

M at 2009-12-17 13:24:44:

The first half almost had me cry with nostalgia.

The second half is blasphemy.

M.

Becca at 2009-12-17 16:59:55:

The mastermind behind moosebutter also did this one: http://www.youtube.com/watch?v=iC65ufGUvKM

and does a solo a cappella show:

http://www.youtube.com/watch?v=Ng3b2C6MAsM