[HarHarVeryFunny]

> Are there other XOR tricks?

I'm not sure I'd call it a "trick", but since A ^ 0 = A, and B ^ B = 0, then ((A ^ B) ^ B) = A. i.e. XOR-ing any number by the same number twice gets you back the original number.

This used to be used back in the day for cheap and nasty computer graphics, since it means that if you draw to the screen by XOR-ing with the pixels already on the screen then you can undo it, restoring the background, by doing it a second time. The "nasty" part is that XORing with what's already on the screen isn't going to look great, but for something like a rotating wire-frame figure it might be OK.