The second and third are almost completely irrelevant to the idea that made the first one successful.
I enjoyed the first one, but can't be bothered to see the other two. Here's two alternate endings to the first one:
#1 - Kind of sad:
[youtube]MW7DQ1bSjFM[/youtube]
#2 - Happier ending
[youtube]9mpk5XeYh-g[/youtube]