You newbies! My first was a TRS-80 (Trash 80). Ran off cassette tapes baby!
2) IBM PC Jr.
3) Custom Built 286 6mhz
4) 486 DX2 66
5) Cyrix something or other
6) Celeron 300A -> 464mhz
7) Alpha CPU & Windows NT

Dual Celeron 550's
9) Hmm, I think it's an Athlon 1800+
10) 1.5ghz Pentium M
I think there were a couple in the middle there I missed from AMD (A K5 maybe?). But I think it would be hard pressed to go back to a hom PC further than the trash-80