[Conman]

Here are a few that seem to have good deals:

http://www.gotapex.com/deals.php
That one has lots of Dell Computer deals as well as AV deals as well. Every once in a while they will have links to freebies(free posters, demos, etc).

http://www.slickdeals.net/
http://www.techbargains.com/

Cheers,
Con