The idea of using their joke is fun, its like a joke inside a joke... But I really think if Web2py is a Web Framework the Home Page should be more fancy not too much but it should represents what Web2py can do.
IMHO the best way to do it is doing a contest and Massimo decides which one to use. For the web designers in our community be the designer of the web2py home page can be a big price it self. I would like to try one my self. You could put the home page app in a reposotory so any want could clone it and try. BTW the quotes from http://web2pyramid.pylonsproject.org/ are hilarious "...one tool to rule them all!"