My friends bad ass water cooling
 

Hehe, just found this picture.
It's from a LAN we had about a year ago.

http://pakir.dyndns.org/water/cln_019.jpg

Notice the bucket of water on top of the case.
After he had used this kit for some months he
noticed that his CPU-temps started to rise
(Athlon 800MHz). When we dissassembled it
we saw that the waterblock was totally clogged
up with all sorts of gunk and the aluminium was
corroded straight through to the CPU-core =)

The flow coming out of the waterblock was about
one small drop of water every other second, hehe.
Still, the temps was quite ok, the computer was stable
as a rock but he then changed back to air cooling never
to return to water.