Avatar was obviously nuts. Nuttier that Cameron managed another improbable box office run in his first movie back since Titanic, under near identical circumstances (overblown budget, negative press during the summer).
I remain amazed at how well Skyfall did, outperforming previous Bond films by nearly 50% in ticket sales and nuking all comers to the UK BO record. As Bond fans, you heard from the older fans about Bondmania in the 60's, but never really thought you'd experience anything close to it until Skyfall came out.
Gravity was fun to track, as it had been a while since a Fall release was so popular.