2. My father bought my brother an SNES for Christmas the year it came out. It was totally his present, but being siblings we ended up sharing it. I only owned one game for it, Street Fighter II, as both of my parents were rather of the opinion that video games weren't for girls. They came around by the end of the life cycle, aided by my brother's waning interest in the thing, and when it launched the N64 was my present. We still shared it, but where previously he got the games and I just played the ones that interested me (or, at least, I could tolerate), the N64 was my system so most of the games were to my taste. The only game he got for the console was Goldeneye, which I never could get into.
Every other console was purchased later in the life cycle. The NES was later because my brother was too young to care about it before 1988. I got my Playstation for Christmas because I really wanted to play Bust-A-Groove. I never managed to get my hand on that game, though.

My PS2 was purchased as a DVD player that just happened to play games, as I had resisted the switch from VHS to DVD until I recieved my favorite anime as a present, and it was DVD only. All of my handhelds were purchased for Pokemon. I got my first Gameboy when Pokemon Red came out (despite being in 10th grade, it was still awesome). I skipped the Colour, but was drawn back in with the NES-designed GBA, and immediately picked up Pokemon LeafGreen. My DS was purchased for Diamond, with SoulSilver about two months later. And when I finally get a 3DS (hopefully soon), it will be because of X.