I saw The Wrestler recently and it had quite the ambiguous ending, but I thought it was a cop out as I do with most ambiguous endings. Almost as if the screenwriter and/or the director are too afraid of giving a solid ending for fear of the audience disliking the outcome. *cough* The Sopranos. *cough* Pan's Lab made it work though. Brilliant film. Big Fish sort of had an ambiguous ending. I say sort of (SPOILER)because it's possible that it was all in the old man's head. Possible, but not likely.