Rugby - mostly internationals, but I'll watch Leicester Tigers if I'm free and it doesn't clash.
F1 - Not overly arsed by it, but I'll watch it if having a lazy Sunday. I'm equally happy watching the 10-minute highlights as a full race.
Footie - If we're playing like shit, I only have the energy to watch our games. If we're doing alright/well, I'll put on other big games, i.e. the Champions League, or hate-watch our rival teams.
American Football/Ice Hockey - Enjoy both casually, but don't follow anyone.