On the letters-to-the-editor page of 1964's Avengers #12, Stan Lee and Don Heck received a correspondence from future A Song of Ice and Fire author George R.R. Martin.

When you have a prosthetic device implanted in your body, how do you retrieve information about it? You can't look at the bottom for a model number and you don't want to go under the knife to find the manufacturer.

When the trailer for the live adaptation movie of indie darling comic book Scott Pilgrim went live, it crashed Apple and pushed the first volume into Amazon's top 100 sellers. Now the creator and filmmakers are nervous it's being over-hyped.

Back in 1974, astronaut Steve Austin, gravely injured in a crash, was given a new arm, two new legs and one new eye in the iconic show The Six Million Dollar Man. But what would such cyborg reconstruction cost today?