Well, Apple finally updated the mini last month. It is now, IMHO, again the best bang-for-your-buck Mac available.
Five USB ports, firewire, mini-DVI AND mini-displayports, up to 4GB of ram, bluetooth and 802.11n wireless, and the updated onboard nVidia graphics (same as available on the new Macbooks).
Dual displays now available (up to 1920x1200 via the mini-DVI connector and up to 2560x1600 with the mini-displayport and a dual-link DVI adapter).
I purchased one and have it currently hooked up to my HDTV in my home office. Bought the low-end one (2.0Ghz C2D, 1GB ram, 120GB hdd) and upgraded it to 4GB ram and a 500GB hdd. Kids love playing WoW on the big screen and I am enjoying playing around with Plex.
Currently using the Apple wireless (BT) keyboard and a wireless Logitech Trackman Wheel. Keyboard feels just like the macbook keyboard (which I don't have a huge problem with). I'd MUCH rather have a blue Cherry-equipped tenkeyless, bluetooth Filco though.