Stop being such an attention-hog and let her do her thing. Get over yourself.
It's annoying as crap. Horrible television.
fwiw, my wife has an incredibly stressful job. When she comes home, she wants to watch ridiculous crap to unwind. I don't blame her at all. I'm fine with Kardashians and a few others, but when she's watching "So you think you can dance," I'm activating the "picture and picture" feature on our tv (did I say picture IN picture? No. I did not) and playing some ps3. That way, you still get credit for sitting next to her, but you don't have to watch stupid stuff (you just have to throw in a few "that was crazy/amazing/completely out-of-line/adorable comments...similar to most phone conversations).