From QWiki

Challenge-TV is a site that holds demos for various games, but mainly QW and CPMA.

CHTV was started in 2000 by Dethkultur, Hoony, DonKing and Agent. It is currently maintained and scheduled for a site-wide overhaul by DonKing and Putty. A lot of hard work and dedication has made CHTV the #1 source for game recordings.

CHTV has currently over 22,000 demos!