For me, it looks like this:
1. PS2: the greatest console of all time.
2. PS3/xbox 360: I would have chosen xbox 360 as my second console if it wasn't for the horrible failure rate. Mine broke in 4 months.
3. SNES: the system where most of my childhood gaming took place. Mario kart SNES, donkey kong country 1 and 2. Multiple third party games like street fighter 2, MK1 and 2 and a lot more that I don't remember.
4. PS1/N64: both share the same amount of gaming time that gen.
5. NES: the one that started it all.
IMO For me Wii is the worst console ever. It has good games but the third parties selection weren't good. The Wii motes and I never got along. Too expensive for what it offered. Poor online infrastructure.