Hate: anything from Transmeta (complete slugs)
Hate: AMDs (especially in laptops, I'll fry my eggs on the stove, thanks)
Hate: Desktop-class P4 chips in laptops (same reason as above)
Like: Pentium M/Centrino (not horrible performance, alot less overheating)
Love: Intel Dual-core and up of the last few years
Currently enamored with: Intel Atom (quick enough, hardly gets warm)
As far as Amigas go, 68060s are nice.
Other old favorites: 6502 (ubiquitous,), i8080 (IMSAI anyone?)