You could take a sick day, bust a window in your house (or apartment), and make the TV disappear.
Is your wife a movie lover? Then start dropping little hints on how 1080p would vastly improve your watching experience. play your cards right, you may even be able to upgrade your surround sound too. (Oh honey, look at this, the new Onkyos offer full 9.2 support, wouldn't that make movie night and blu-rays just sooo much better)
Or, here you go, start subtle little changes in the picture settings (spread it out over a couple weeks, this will give you time to shop around for a good deal on your new TV) until the picture looks horrible. BAM! instant reason to buy the new TV.
Boy, I feel like a terrible person right now. Nothing I offered was honest.
