I just received my new Mac mini yesterday, as well as a new Apple TV. I got the 2.3GHz quad i7, 4gb RAM, 1TB HDD, with AppleCare. I decided in the end it wasn't worth waiting for a hopeful 2014 refresh of the mini when the current model will already do everything I want it to just fine. Although, it might sting just a little if the rumors are true and a new model is out before the end of Feb. Oh well, the mini I got is probably overkill for what I'm going to use it for as it is!
It's mostly going to be used as an "iTunes server" for watching movies/tv shows through my new Apple TV on the TV in the living room. I'm still working on that project - storing my iTunes library on a 4TB USB3 HDD I bought a few days ago as well. I wanted the quad i7 so Handbrake encodes would go a little faster. I'll also use the mini for music. I finally got all my CD's digitized and copied into iTunes. Other than that probably just some light web browsing and light gaming. The HD4000 iGPU should be more than enough for the few (old) games I would ever play on it: Half Life/Half Life 2, Doom 3, Day of Defeat: Source, etc. I have plenty of consoles for the rest of my gaming needs.
I still have a few things left on my shopping list.. I'd like to get a decent battery backup for the mini, upgrade the RAM to 16GB in a few months, maybe get a magic trackpad. Maybe in a few years upgrade the internal drive to a 500GB or 1TB SSD, if/when prices come down.