I'm a fan of Marco D'Alfonso since his Kirby-style Akira cover. But that's not his only great mashup. There are many more—and even better! Like the iconic Avengers cover by Jack Kirby mixed with Adventure Time. There are much more and I love them all.
Calvin Hobbes. I have so many great memories of this comic strip since I first read one over 25 years ago. Bill Watterson was able to communicate the essence of family life and the world seen through a little boys eyes.