Some of the sites I visit, in no particular order. Most of which you've probably already heard of.

By the way, while Xenozoo is sort of "family oriented" a few of the following links are not. So, surf responsibly.

Gunnerkrigg Court

ShortPacked

Dresden Codak

Astronaut Elementary

Sinfest

Hark, a Vagrant

Red's Planet

Fart Party

Dawn of Time

Skadi (via Dumm comics)

Bad Machinery

Meek

Much the Miller's Son

Order of Tales and Rice Boy

Lackadaisy Cats

Ojingogo

Shi Long Pang

This isn't a webcomic, but a really great french band that most people probably haven't heard of.
www.kwoon-music.com