I read the following webcomics:

http://belphegor.sanguinis.net/
http://www.ctrlaltdel-online.com/ind...ives&date=last *
http://www.dominic-deegan.com/ **
http://www.fallencomic.com/
http://www.filthylies.net/
http://www.gpf-comics.com/
http://www.noneedforbushido.com/index.html
http://www.machall.com/
http://www.megatokyo.com/ *
http://www.misfile.com/
http://nuklearpower.com/
http://www.penny-arcade.com/
http://www.giantitp.com/thegiant.html *
http://www.sorethumbsonline.com/
http://emi-art.com/twtyh/main.html (webmanga by a friend of mine)
http://www.vgcats.com/ *
http://www.rpgworldcomic.com/

* Comics that I particularily like and highly recommend.
** My personal favorite. Dominic Deegan is an awesome comic and a great read for fantasy fans.