Wow... what a combo!
I picked up the Canon 85mm 1.2L lens the other day. Yesterday was my first real chance to use it. And I must say... what a combo the 5D Mark II with it's 21mp resolution and the Canon 85mm 1.2L lens make. Just take a look at this image and the 100% crop below it and draw your own conclusions:
(21mp image - reduced size to fit here)
All I can say is ... I'm in love with this combo. I've never had or played with a sharper lens.