http://ajaxwhois.com/
Excellent domain search tool, ajaxified, and supports multiple (even configurable) extensions, probably not 100% reliable though if it relies on whois.
http://www.dotomator.com/web20.html
The web 2.0 name generator from dot-o-mator is an interesting tool which generates an endless stream of Web 2.0 sounding names. Useful for name inspiration.
