In Just Cause 2 for PS3 and Xbox 360, there is a throwback to the show lost with a “Lost” island, including plane wreckage of flight 815, a hatch, and a few other surprises.
The island is in the northwest corner of the map near coordinates 1741 by 4360. The problem is that if you try to fly over the island, your plane will automatically crash (imagine that). If you wait until you get a mission to save a man from Lost Island though, you’ll be able to land or dock there normally.