Superman has been killed jillions of times in Action Comics, but he always comes back, don't make me reinstall my scanner! I'd hate to have to show you some of his lame "deaths" prior to the mid-80s.
Superman == unkillable, whish is just the way I likes it! Who else would be good at leading the JLA? Aquadork? The Martian Manwiener? Plastic Man!?