Phew, this was a fun one.
These guys are a bit 'o awesome-sauce. Forming webcomics to what they are now. These are the grandparents of webcomics.
I listen to their podcasts whenever I'm drawing. I've never done any fan-art of them till now, which is strange to me, lol.
From left to right:
Kris Straub: http://www.starslip.com/
Dave Kellett: http://sheldoncomics.com/
Brad Guigar: http://www.evil-comic.com/
Scott Kurtz: http://www.pvponline.com/
If you haven't heard of any of these guys, you are seriously missing out. Go check out their stuff. It's simply amazing.