Accessing a console X session from a remote system later?

[Joey Teel]

Is it possible to setup an X session at the console then later access
that same session by remote without having to use saved sessions?
Basically I need to leave an X app running on my console, and later
access the session (or at least the application) from another system,
usually over my LAN, but occasionally I may need to do so over internet.

If it is, what would be the easiest way of setting this up?  I need a
method that will let me run my TV viewing software at the console, which
eliminates VNC, I tried that already, and fxtv core dumps almost
immediately under VNC, but runs fine in a normal X session using KDE as
my window manager.