man, i used to go through this, until we moved in together. i sat on my bum all day and watched the games while she painted the bathroom. if this was pre-move-in she would have whined about turning off the second game.
so, if you live with her, put your foot down and tell her to plan some gardening or cooking activities. if you dont, either decide if she's worth putting up with and give in, or get rid of her and watch the games.
now if i can only get her to let me watch the late game instead of Desperate Housewives