http://www.progressiveboink.com/archive/ca...alvinhobbes.htm
From about the age of 7 I've been a huge fan of Bill Watterson's Calvin & Hobbes. Unfortunately that was only a few years before his retirement.
That link is a collection of the 25 Greatest C&H strips, complete with insightful notes and analysis, as chosen by the editors of the site.
Give it a look if you have a bit of spare time.