what's that program?
 

No, I'm not asking about gkrellm :D!

I want to know which prog (it maybe simply an X feature) where you can display your linux screen on another linux computer on your LAN.

This is very handy for not making colleagues get up and go to your computer to see what you're trying to show them. You simply tell them to sit still, and then redirect your screen to their monitor.

I actually don't know what this "feature" is even called. Anybody know what I'm talking about?

For this i generally use VNC, hope this helps.
R0UTE

ah yes, that might be honey.

Going through man Xvnc right now.

Thanks ROUTE.