HP LX series was a big one. The AlphaSmart Dana almost fits, too - it was a Palm device rather than just the dedicated word processor and keyboard functions.

My Psion Series 3A got lots of use until the third time I dropped it and wrecked the wiring in the hinge area, and it refused to power up again. Was sad.

The king of them all, of course, is the Radio Shack TRS-80 PC-2 pocket computer. Much cooler than the Sharp ones because Radio Shack.