Another nifty little Palm app, found on Freshmeat.

PalmOrb: Use your PalmOS PDA as a LCD status display via serial, USB, BlueTooth or IR

PalmOrb : Introduction

PalmOrb is software that allows you to use your PalmOS device as a LCD
status display for your computer! You can display system stats (such as:
CPU load graphs, CPU temperatures, free disk space), news alerts, stock
indexes, WinAmp graphs, etc.

PalmOrb works by pretending to be (or emulating) a real LCD; a Matrix
Orbital LK204-25 LCD. So you can use existing software that expects
a Matrix Orbital display! Here are a few LCD driving programs: