I've owned at some point or another:

NES
SNES
Genesis
N64
PSX
PS2
Dreamcast
Gamecube
PS3
Wii
Game Boy
GB Color
GBA
PSP
DS

and I presently have access to a 3DS though it's not mine. And of course there's the PC. I've had one constantly with various operating systems since we were all running DOS. I haven't been without a PC since the third grade maybe.

Right now I've really got the urge to buy a PC-Engine too.