Here's my awesome tally:
NES - hard to read games, had to blow in the cartrige/system
genesis - no problems
PS1 - wouldn't read discs, fixed by turning it on it's side

PS2 - wouldn't read dvd movies, bought a ps2 slim to replace it
xbox - no problems
gamecube - no problems
PSP - dead pixels, exchanged
PSP #2 - dead pixels, sold
DS - dead top screen, sent for free repairs
PS3 - broken usb port, sent in for repair under warranty
360 - red ring, sent for repair under warranty
360 #2 - loud dvd drive, still using it sparringly
wii - collected dust, sold