I always intended to get both but haven't got around to buying a PS3 yet. I chose the Xbox 360 first so that I could play Mass Effect (at the time Bioware was denying intentions to release it for PC). Over the years it's become more apparent that I prefer the Xbox 360's game selection over the PS3, which is probably the reason I haven't got around to buying it yet. I do still intend to get one for certain PS3 exclusives though.
Rogers Communications, my cell phone service provider, is giving away free PS3's to new subscribers. I had only just switched to Rogers 3 months before they started this promo, if I had waited a measly 90ish days longer I would have a free PS3 by now. >_