With all due respect I think you're missing the point. The guy wants to connect to his current X desktop with all the currently running apps on it. X forwarding is friggin' amazing but that is not what he is asking for.
My 2 cents would be to use krfb if you use KDE or vino if you're on Gnome. I can't vouch for vino because I don't gnome but krfb is really simple to run: start the program (from the commandline, a 'run' dialog or whatever and click configure. Then make sure it's set to accept uninvited connections, and enter a password the client should use. I don't think you have to have to use the 'announce over the network' feature but if you're on a local lan it can't do much harm I guess. Also allow the client to take control of the computer. Apply and close.
Then connect with your normal vncviewer program, enter the password, and bob's your uncle.
I was looking for this too and found the answer in another thread.
Last edited by acidzebra; 01-31-2006 at 12:36 PM.