Today, as I was thinking of Walter Huston‘s laugh at the end of his son John‘s movie, Treasure of the Sierra Madre, the laugh which makes the movie and secured the elder Huston’s Oscar, I realized that that laugh is, in my opinion, the best movie laugh — at least in the flics I’ve seen. So, today’s open thread, what in your opinion is the best on-screen laugh?
UPDATE: Since Bridget, in her comment to this post, referenced a laugh from Sex and the City, I encourage others to suggest laughs from TV shows as well.