Cricket and tennis, by a mile. I love the former - I don't actually think that a good close Test match can be beaten for nail-biting tension - but hate the fact that it's a sport administered by stupid, short-termist and often unforgivably posh cretins.
Incidentally, seems strange to think now that there once was a time on NSC when any mention of cricket was greeted with HOWLS of derision of the fine sport by some of the regulars. Mentioning no names. :BarnetandCroydonSeagullaswas: