screenshot from my two computers
I just downloaded and installed Julien Robert's teleport (donation-ware), which is the best keyboard/mouse-sharing app I've ever used. Previously, I was forced to use Synergy because I had a Windows machine next to my Mac. But now that I'm 100% Mac-based, teleport is just about perfect. It has been very stable so far, and features pleasing interface cues to show mouse location (when not on the main screen) and the moment the cursor crosses screen boundaries.
I'm off to donate to Robert's shareware fund. :)
*UPDATE* One thing I'll have to get used to is Mail.app on two different keyboards. Before, I used Mail.app with Mail Act-On's keyboard shortcuts exclusively on my MacBook Pro. As a result, I now keep hitting Option instead of Control -- the lack of the Fn key on my desktop keyboard is throwing me off!