Tried geektool myself... I liked it but it works as something to display stuff through the terminal... like an activity monitor. I admit, its pretty nice and give the OS that techie look which is always cool, but like I said, Linux guys are able do more and are able to have other awesome features on their operating systems, but we cannot; even though we have the same UNIX power..You can only run single commands in geektool not fully interactive terminals.
This is one of the downsides of closed source environments - they're less easily customizable and harder to tinker with. You may be out of luck here.