Shame Beccy. I won't say it's my favourite game to watch but I'm able to enjoy watching a variety of ball games including football, rugby and cricket.
American Football is the one that bores me to tears. They seem to spend more time stopping, switching players, discussing what they are going to do, etc. than getting on with the game.
One of the most exciting to me sadly hardly ever seems to get any coverage in the UK. That one believe it or not is Aussie Rules Football - a fast and furious game from what I've seen of it.