I heard that smoking off tin foil can contribute to Alzheimer's. It's been beaten to death all over the net and i can't find a reputable study that would back it up, so I really don't know how much truth there is to it.
I agree with what they're saying above about smoking binders and fillers, but honestly, I doubt that's going to stop you. I've never smoked pills before, but I've seen it done and it looks like a fucking waste. The pills don't vaporize as well as you'd like them to, and it looks like a lot of the actual oxycodone is lost in combustion. I wouldn't fuck with it, seems like an idiotic idea all around and doesn't look like there's much point.
I used to do oxy's all the time and I remember reading the oral BA is higher and thinking, "yeah but I want the rush of a rapid onset. I don't want to eat a pill, wait an hour for a gradual onset and then finally feel high." I really like effie's idea of sniffing half and eating half, or if it doesn't gross you out, I'd try plugging 'em.