UFC for me. Used to love boxing as a kid but it just seems tame now in comparison.
Tennis can be good too as can cricket and athletics but only if the national team are being represented.
The only one that works for me is hair of the dog, even on a bad one!
A couple that never agree with me are full cooked breakfasts, which just make me feel sick, and sport/fitness of any sort.
I suppose (taking the positives from my new addiction) I have inadvertently found out how long my battery lasts playing constant from a full charge.
....6 hours!