I still have my original PS2 and it has never given me any trouble. The only system i bought twice was the DS. My screen cracked on my original phat DS so i bought a new one the next day.

I bought N64 ~98 with my brothers. Then a used one in like 02 when the first N64 had disappeared some how :)

I have two DS's. I got my first soon after launch and than earlier this year I decided I wanted a DS Lite.

My first GameCube stopped reading discs for no reason one day, so I decided to buy another one with that Metroid Prime bundle at the time. Metroid Prime 2: Echoes' demo was amazing, that's all I have to say (and owning 2 copies of Metroid Prime also rules). =P

2 ps's cos the laser died in my first one
2 dreamcasts cos the laser died in my first one
2 ps2's cos the laser died in my first one

i bought 2 ps2's because one got broken
3 gc's because ne got broken and so i could have one in my house in europe and the other in the US

Never.

2 Gameboys. 1 Gameboy and 1 Gameboy Pocket.

2 GBAs. 1 GBA and 1 GBA SP.

2 PSXs. First one died and I replaced it with the PSone.

3 PS2s. First 2 died, replaced the 2nd one with a Slimline, which hopefully won't die.

Planned obsolescence for the loss. ;_;

Several Atari 2600s (various models).
Eight Intellivision (various models).
A couple of Atari 5200s, Colecovisions, Atari 7800s, Odyssey 2s, C-64s, Vic-20s, Aquarius computers.
Several TI-99/4As
Coco 2 and 3
Three NES (regular, top loader, clone)
Three SNES (regular, second model and clone)
Two SMS
Seveal Genesis (Models 1, 2, adn 3) -- Plus a pair of 32xs and a CDX
Two PSXs (both free) plus a PSOne
Two N64s
Two Saturns
Two Dreamcasts
Gameboy, Gameboy Pocket), Gameboy Color, GBA, GBA-SP, GBA Micro
Two Gamegears

All I can think of off the top of my head.
My wife is right, I am out of control.

Mike from Morgantown

Over the years I've had 3 NES (the original one belonging to the family (which died around '93), and two given to us by friends (one died, the other's still kicking)), 2 SNES (largely by accident; the first one I got was a used model from a pawn shop, and didn't work), 2 PS2 (the original stopped reading DVDs and CD games; gave it to my cousin and got a slimline), and 2 DS (got an original, then a Lite; original went to a friend across the country). Oddly enough, my PS1 has never stopped working, and it's one of the large-size models.