...and American Football isn't played to any significant level outside the US and Canada. Anyway, Table Tennis is pretty big in Asia.

I've heard that they're thinking of introducting 20-Over cricket into the next Olympics. For the non-cricket savvy, 20 over cricket last about 3 hours for a game, rather than 5 days, and is a lot more exciting to watch. I think that'd make sense, given that there are 10 countries (Australia, NZ, England, India, Pakistan, Bangladesh, Sri Lanka, Zimbabwe, South Africa and the West Indies) that play cricket to a relatively high international standard, and another handful that are starting to gain a bit of ascendance (Ireland, Scotland, Holland, Kenya, Canada, USA, Uganda, United Arab Emirates, Namibia).