I gotta say this is a damn good post and some good musicians listed so far.
Doesnt this smilie look TOO much like Goku?
Vocals-Christopher Hall (Of Stabbing Westward)
Guitar-Jón Þór Birgisson (Of Sigur Ros)
Bass-Either Juan Alderte (Mars Volta) or Hunter Burgan (Afi)
Drums-Easily, without a doubt, ?uestlove (The Roots)
I would also probably have someone like Thom Yorke (Radiohead) or even Seal throw in some guest lyrics.
It wasnt in the original lineup but I was thinking if there were something a little exotic like a keyboard, Id give that title to Keith Emerson (Emerson, Lake and Palmer)