Calvin is definitely my favourite comic (followed closely by Asterix). Both are witty and satiric in a way, but Calvin is much more. It is a celebration of the child in every person, of innocence and of unbridled imagination - all three being one of the few sources of pure joy! No wonder Calvin puts a smile on my face everytime I meet him.
All hail Spaceman Spiff! And yes Stupendous man as well! :)