LEGO is getting ready for their big May The 4th sale next month. And this year's exclusive minifigure will be a chrome TC-14 Protocol Droid.
This item will be free with any Star Wars purchase of $75 or more from Shop at Home.
To celebrate the release of the Marvel Super Heroes sets later this month, LEGO will be giving away a free Hulk minfigure (A minifigure, not a big lump of plastic with arms) to any order of $50 or more between May 16 and 31.
I do not know if this promotion includes only Marvel orders, or if this will include all LEGO orders.
Thanks to Brick Fanatics for the info.