Some webcomics are really well written. So if you guys know any good ones, here is where you would recommend them. The one I would tell everyone to read is Questionable Content (at questionablecontent.net). The dialogue is really well written and its creator is also a pretty good artist.
I love Explosm's Cyanide and Happiness - very, very crude, and I find some overly offensive, but others are hilarious.
http://www.lackadaisycats.com/index.php this is by far one of the best comics out there on the web! http://www.thezombiehunters.com/index.php Also vary good in my oppionion.
I read far too many. The following are just the top three: Sam and Fuzzy Scary Go Round ShortPacked! I also read Dr. McNinja, Applegeeks, Ctrl+Alt+Del, Dominic Deegan, and El Goonish Shive.
xkcd is my favorite. I also read Questionable Content. I used to read Holy Bibble, but the artists are so unreliable about updating it that I gave up. I had a webcomic of my own for a little while, but I was too busy to keep up with it. I'm working on a new one, but whether or not I ever get it out there remains to be seen.
www.asofterworld.com www.alessonislearned.com www.girlgeniusonline.com ... and some others already mentioned.
http://www.misfile.com: It's the story of a dude who gets turned into a girl because of a cosmic misfile in heaven. On-Going. http://www.kiwisbybeat.com: A little girl has god-like powers. She, and all of her friends and family are aware of this. They don't seem to mind. She plays with them, creates new worlds to play in. Too bad it ended though :\. I also read xkcd, penny arcade, Dr McNinja and Dinosaur Comics, but everyone knows those.