[r00fus]

I know a bunch of non-techie xkcd fans that don't fit the tech geek stereotype. They tend to be nerds (ie, lawyers, biotech researchers,, etc). They also tend to be young.

xkcd is surprisingly accessible to folks who are brainy (more folks than you realize).

[sliverstorm]

I don't believe XKCD is actually targeted at tech geeks. It describes itself as "A webcomic of romance, sarcasm, math, and language."

I am entirely unsurprised non-geeky brainy folks might enjoy it.