“So good, I bought two!”
I got the Intel Mac Mini as a birthday present when it first came out with the Intel processor. I use it for everything. It's great because it is sooooo quiet (it replaced a noisy PowerMac G4), and yet has the power to handle lots of concurrent tasks.
I recently purchased a second one, that I use for a media computer connected to our TV. We're currently living in an area without much TV service, but I can podcast my favorite programs to fill in the void. It comes with Front Row software (all Macs do) and a remote, so it's easy to setup. All I needed was a DVI to video adaptor from Apple ($19.95) and I've got a media machine!
It does run a little hot when in it's normal position, but it easily stands on it's side and stays plenty cool, even here in the Caribbean.