An awesome "remix" of bits of GWB speeches and soundbites:

http://media.audiostreet.net/08E2F65592DC48DD83CD9D98D28F77F9/Download/whos_the_nigga_.mp3

The rest of the tracks are pretty good -- http://www.thepartyparty.com/ -- but that one one is all manner of genius.

Back in the early nineties, a group called Emergency Broadcast Network did a (relatively) famous cover of Queen's "We Will Rock You," using snippets of then-President George H. W. Bush's speeches for the vocals. It was pretty hilarious.

<nerd>
The video was pretty awesome as well, since EBN does most/all of their music by using sounds culled from video clips ... so sequencing the sounds produces a mashed-up video sequence of the source material. The "We Will Rock You" video made Bush look very Max Headroom-ish.
</nerd>

I had a great remix of President George H. W. Bush giving a state of the union speech. "And finally, I had a joint tonight, and it is kicking in, now. And that is fine. No one ever thinks I need drugs." etc. It was really funny. I've still got it as a WAV file somewhere, so I'll see if I can dig it up and post it online.

A whole bunch of remixed speeches of Bush Sr can be found here.
http://www.diymedia.net/collage/truth-bush1.htm

The joint smoking one:
http://www.diymedia.net/audio/mp3/gbushcutup.mp3