Calvin and hobbes is awesome!
Growing up, i loved calvin and hobbes. It is in my opinion one of the greatest comic strips of all time. I have all the books and i love them to death. This site http://www.progressiveboink.com/archive/calvinhobbes.htm is really great because if you have never read calvin and hobbes it picks out some of the best of em for you to enjoy, plus they have nice little commentary on the meanings behind the comics. Definately worth a look for old times sake.