Perhaps you're interested in recent memory attacks that I've been researching.
You may also be interested in what I hope is the final nail in the coffin of MD5.

"Oh wait, let me stand behind you. Nested Parens"
"Don, do you mind if I put this on my home page?"
"Gosh no, you're my homeboy after all!"
"Nested Parens"

(I originally shot the photo on the shirt and someone mailed it to me as a gift.)

Here's my GPG key information:

pub   1024D/9D0FACE4 2008-03-11 [expires: 2010-03-11]
      Key fingerprint = 12E4 04FF D3C9 31F9 3405  2D06 B884 1A91 9D0F ACE4
      uid                  Jacob Appelbaum 
      sub   4096g/D5E87583 2008-03-11 [expires: 2010-03-11]