This video is from the Curse of Monkey Island and the first time I encountered it in the game I remeber smiling wider than I have ever before. If this doesn't persuade you to go track that awesome game down, nothing will. Special thanks to phantomvulture who uploaded it to youtube. (hmm, I seem unable to embed the video for some reason, so I guess I'll just give you the URL).

http://www.youtube.com/watch?v=1-9my0tsutw