A particularly good mashup

Via BB, the magnificent Best of Bootie 2006 CD. (Free, MP3, what are you waiting for?) There’s also 2005.
Mashups are kind of a semi-new thing, dating back a few years. It seems to be the evolution of cross-fading and mix tapes to me, but judge for yourself.
I like the whole disk, but track 9 really hooked me - ‘Crazy Logic’, a mashup of Gnarls Barkley, Supertramp and Rockwell. (Direct link to song.)
The backbeat and main content of the track is ‘Crazy’, by Gnarls Barkley:

Having heard the un-mashed-up version, I think I want to get the album, St Elsewhere.
Mashups seem to be musical anchovies, either you’ll love ‘em or hate ‘em. Go decide for yourself!
Other personal favorites:
