TV Software on a Mac mini?

Hey guys, wondering if anyone has run the TV software on a macmini/other hardware before, and can give any input if it works better having bigger faster hardware to backup the TV interface?

Has anyone from experience been able to discern whether or not the TV hardware has anything to do with lag and slow responsiveness of the interface?
We have 3 TVs so I am very familiar with the TVs shortcomings, I would like to explore the possibility that it is mainly a hardware issue.

Or is it really software and/or networking problems at the heart of the TVs issues?

Is it worth a try to run TV software in this manor, or has it been tested in this way and still found to be wanting?

And while front row is nice, once you have used TV interface enough to appreciate the finites of the refinement, there is no comparison for how much more pleasurable TVs interface is to use than front row....well when it works properly that is.

Anyone have a link to tutorials that were better examples to follow, or tips to make it run smooth and correctly?

Any tips you can pass along now that you have yours up and running and did not know about until later?

Oh cool! What is the freeware app called? I've googled and come up empty.