I know the ordering will be a little off here :
1) Z80
2) Commodore64
3) TI-99
(I believe that's what it was labeled. It used cartridges &
tape storage. Made a couple of TI-Basic games with it. Don't
recall what processor it used)
4) 8088 @ 4.77MHz
5) 486 @ 33MHz
(took me quite a while to convince my dad to upgrade

)
6) AMD 586-133
7) Pentium Pro 200 - Still running, but now its on an Abit LX6!
8) Celeron 300A - between commission on the LX6
9) Celeron 566(FC-PGA) - My wife's Compaq
That's about it for now. I actually have a TBird800 lying around, waiting for a motherboard.