Via BoingBoing, a website featuring scans of the cover pages of 1520 issues of Italian pulp SF magazine Urania. The oldest ones, dating from the early 1950s, are my favorites. Here are a few that caught my eye:
Your choice of car indicates that you are compensating for something.
Schrodinger's Cat is back . . . and he's really pissed!
Really, really pissed!
I have seen the future . . . and it is teh hott!!