I thought those were the best notebook keyboards around, by far. The rubber domes were stiffer and not completely linear, and gave it a unique, lightly tactile feel. I also liked the scalloped keys, plus backlit keyboards are pretty.

I just bought a used MacBook Pro, and unfortunately Apple changed the keyboard for the worse. The keys look the same, but the rubber domes are now soft and no different than any other notebook keyboard. But hey, you could light up a room with the backlight now.
The connector is different, so transplantation is an impossibility. Maybe I could remove the rubber membrane layer off an old keyboard, and do some surgery that way. I still have an old PowerBook keyboard I replaced due to some missing keys, the membrane part does appear to lift up from the base of the keyboard. Or probably not, I bet I'd mess up the backlight.