Calvin and Hobbes, especially
this one:
many moons ago, there was one in English papers called Beau Peep that was quite funny, but I wouldn't know if it' still around. I have a couple of old books still, I think. I might search them out tonight and inflict some scans upon you.
Linus, from Peanuts, is cool too. and the strips in Private Eye such as Yobs, The Premiershits and Celeb are worth a read. The Fortena Times used to have one called Guru that was excellent.