After 19 days in theaters (only 10 days in US theaters), The Avengers has reached the $1 billion mark for worldwide ticket sales. That puts it right up there with Avatar and Harry Potter: Deathly Hallows Pt. 2.
It's the fastest movie to reach $300 million and $350 million in US ticket sales. It also enjoyed the best 2nd weekend ever with $103.2 million, completely surpassing the previous record holder, Avatar, that made "only" $75.6 million in its second weekend.
With these kinds of numbers, I wonder is DC is going to try their hand at a superhero team franchise and we might see a Justice League movie within the next few years? While it would be cool to see a movie that features Superman, Batman, Wonder Woman, Green Lantern, Flash, Martian Manhunter, etc. all onscreen together, I wonder if the logistics of it all are even going to be possible.