A user from the forum raspberrypi.org has upload an image prepared with Arch Linux and graphical environment including packages with very good results.
If you've always been afraid of Arch Linux or does not work like a pro, this is your chance ;)
Log in with user root and password root. The environment used is Oppenbox with Rox. It's overclocked to 930 Mhz and comes with a set of pre-installed packages:
The image fits on a 2 Gb SD and has a swap partition. To run the VNC server, simply type vnc.sh (password is button). Once you have installed your WiFi card, there is a script to configure called wifi.sh
Image: .img 783,91 MB
More info: Arch Wiki