45 minutes later, I stop tapping through back issues...
This wasn't your first encounter with XKCD was it?
If that was your first XKCD, then...
Here are some personal favorites:
https://xkcd.com/149/https://xkcd.com/730/https://xkcd.com/612/https://xkcd.com/1205/https://xkcd.com/670/https://xkcd.com/869/https://xkcd.com/378/https://xkcd.com/292/Also possibly useful: Every once in a while, he publishes a strip which I need to have explained to me because he's referencing something I haven't heard of yet. Apparently I'm not the only one, and so now there's a whole site:
http://www.explainxkcd.com/Interesting tidbit: One of his strips won a Hugo award recently:
https://en.wikipedia.org/wiki/Time_(xkcd)