CG stuff:
www.3dmaxer.dk - Danish forum
www.cgtalk.com - Huge CG forum
www.xsibase.com - Best XSI forum
www.edharriss.com - Alot of XSI tutorials to get here
www.softimage.com - Where XSI comes from, also free tutorials

People I know (Mostly CG related):
www.3d-empire.dk
www.Hatetank.dk
www.animat3d.com
www.skrae.dk/v2
www.mcgreed.dk
www.bunjidesign.dk
www.kennethfejer.dk
www.coldmind.dk
www.darkray.dk
www.seltar.org

Misc:
www.wulffmorgenthaler.com - Can't be funnier than this
www.garfield.com - You should be able to guess
www.penny-arcade.com - Gaming comic-strip
www.vgcats.com - Always good for a laugh