Certainly the greatest turn-off for me. I don't mind a knock myself, but to televise it? I'd rather watch paint dry.
The game is as dull as bloody ditchwater to watch, and the players all seem to be two-dimensional bores. And as for that Tim Henman - don't get me started! When the tabloids started calling him "Tiger" Tim I almost pissed myself: I've seen more charisma in my fridge.