UltraVNC Single Click. I have a binary in my public dropbox for all buddies to download and run. Just a matter of starting the listener in my side.
OK, windows-only, but you can make a OSX shell script to do the same thing there; at least you have a full-featured shell.
And for security, UVNC have a DSM plugin, if you don't really care about full compatibility
As of this posting, the port linked in the article doesn't work on Opera 11.64 (Win 32).
Worked fine in my Win32 11.62 build 1347, just got in two levels finished. Maybe they were just slashdotted when you tried
When someone says "I want a programming language in which I need only say what I wish done," give him a lollipop.