I've been a synergy user for years... It is definitely one of the best apps out there if you use multiple computers.
SynergyKM works great for macs.
For those who don't know, it basically works by allowing you to scroll off one edge of the screen onto the other. As far as I know you can have as many systems as you want, and arrange them any way you want (ie side by side or stacked on top of each other).
You can also copy and paste text between machines.
aaand... you can map different keys to different functions... Eg. If you have a mac and something of the "pc" variety you can map ctrl to the apple command key to keep your main shortcuts consistent.
Unfortunately when i map
and execute, the destination synergy client, in this case on a windows vista, dies.
Good to know this is out there. Synergy + Wormhole could be a really powerful combination for the right project.