It took Harry Potter and the Deathly Hallows: Part 2 all of 17 days to zoom to the $1 billion mark, becoming the first in the franchise to achieve a feat only eight other films have ever managed. But hot on Deathly Hallows Part 2's tail is Transformers: Dark of the Moon, notes the Hollywood Reporter, which currently stands at $983 million and is poised to join in the $1 billion fun any day now. The others on the list: 
 -  Avatar ($2.8 billion)
-  Titanic ( $ 1.8 billion)