FanlessTech.com – a website about fanless computers
About four months ago I became an owner of a fanless Shuttle XS35GT V2 (archived | specs) slim PC/HTPC, which opened a new world of fanless computers for me. And, I must admit, it sounds awesome!
Although, indeed, you have to sacrifice some performance, so no super-modern games, but old ones are probably okay.
Apparently, I'm not the only one who enjoys silent computing, and there is a website dedicated to fanless computers - FanlessTech
Also I noticed that all Shuttle computers share similar design.