Recently, my wife
Q acquired a box full of old comic books, mostly Marvel, in good condition and in plastic sleeves. We're still not sure what we're going to do with them; we haven't even finished figuring out what we've got yet. Anyway, a couple of them were issues from Marvel's alternate-reality series
What If, which shows how events would have progressed had things happened differently than they did in the canon continuity. I read the one on the left, and it was pretty good. I haven't read the one on the right yet, but the cover alone had my wife and I laughing out loud.
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bonus link)