Great thread!
Let's see... well my Amstrad CPC 464 and green screen monitor still work fine, both werre purchased in 1984!
All my old Sega and Nintendo consoles work fine
My Amiga 600 works fine too despite being dropped a few years ago
My Amiga 1200 is gutted for spares/repairs (the mouse port is missing after a tower conversion)
Last time I checked my Commodore 1084S monitor was working great
C64 II is fine though the tape drive likes to chew
The only dead hardware I own is an A500 which was dead when I got given it!
PC's on the other hand well my family's computers have been not so reliable. The first PC they had a Pentium II - 300MHz with 64meg RAM and Win 98 was a nightmare with things going wrong with it nearly every few months and the one after the Duron 750 went through a phase of switching itself off. Funnily enough though every PC I have owned has been fine and the eMac I am selling on eBay at the moment has never gave any problems.