Comic Book Character: The Flash
When we see Hurley on the plane in the end, we see he's reading a comic book about The Flash. The Flash is a comic book hero who can run at lightning speed. And if you look hard, one of the panels apparently has a polar bear in it. Since Hurley is Spanish and that was the comic book that Walt was reading in the middle of the season, then it is safe to assume that the comic book belonged to Hurley and Walt found it in the crash.