WARNING - SPOILERS!
When I saw The Lego Movie (it was great ) there were a few set-worthy items, but they weren't made a set. Here's a set idea from me:
Battle of Bricksburg: includes Batman, Benny, a knight, x3 Robo SWATs, x3 Bricksburg citizens. Set includes building facade, x2 Micro Managers, a car that can rebuild into a flying machine and a lamppost. Play features include: building explodes, 2 in 1 feature for the car, a catapult for the knight, flick missiles, and falling lamppost. Set retail: £70.
Now it's your turn!