I am at a complete loss on this one. I purchased a couple episodes of House in HD (the last two episodes of season four), and have noticed that sometimes the theme song played over the opening credits is what it should be - Teardrop by Massive Attack - but sometimes its not - some other song, that's played over the closing credits too. I've tested this on my Mac and Apple TV. No reproducibility that I can find. Am I going crazy? Please check yes or no.