My experience so far:
- Installation from PPA was smooth, after purging vanila Wine and Crossover. It complained about Wine 1.4 when I tried to run winecfg, but I didn't install it. However I did install Mono as requested. Worked out of the box!!!
- Performance is great, with no stuttering. Video quality is good. I had the impression I was getting lower quality, but tested an HD movie and it was okay.
- Temperature while watching an HD movie is 60-65º Celsius, which is lower than running Netflix on a VM with XP.
- I am running Ubuntu 12.10 64bit with Gnome-Shell instead of Unity. My Notebook is an Asus A43E with an i5 CPU, 6GB of RAM and Intel HD 3000 graphics.