We all know Peter Parker's a science nerd, but how realistic are the concepts he's dealing with in The Amazing Spider-Man? After all, a key plot point is a scientist who injects himself with lizard DNA to regrow a limb and becomes a monster instead. Well, according to actual scientists, the lizard monster part might be off, but the rest isn't all that crazy.

The Amazing Spider-Man is finally in theaters, and we know all you True Believers will be on the lookout for the traditional cameo by Spidey's co-creator, Stan "The Man" Lee. Lee's definitely in the movie, and while we won't spoil the specifics of his cameo for you, we can tell you there was at least one bit Lee wanted for his appearance that director Marc Webb turned down.

Andrew Garfield did a lot of preparation to get ready to play Peter Parker and his web-headed alter ego in The Amazing Spider-Man. He went over every letter of the script, trained for all the stunt sequences and worked on his American accent, but Garfield apparently went a step further. It seems he took the time to watch a certain X-rated web slinger at work ...

Though they're both Marvel properties, and both on the big screen this summer, The Avengers and The Amazing Spider-Man are controlled by different film studios—making a true crossover nearly impossible at the moment. But, that didn't stop Marvel from nearly sneaking a Spidey easter egg into the box office juggernaut Avengers.