I took the plunge and sold off all of my Nikon gear. I'm waiting for my new camera's to arrive... a 1D Mark IV and a 5D Mark II. I already picked up a 1D Mark II as a backup. My lenses and camera bodies should arrive in a few days.
For lenses I got the following: (all Canon brand)
28-70 f2.8L USM
70-200mm f/2.8L IS II USM
20mm f/2.8 USM
100mm f/2.8L Macro IS USM
50mm f/1.4 USM
Thank God that this has been a fairly easy transaction. I ordered from one dealer and they had the 28-70, 70-200 and the 20mm in stock. Plus ordering that much gear allowed me to get a reasonable discount from their advertised prices.
This is the perfect time of the year for me to make the change. I just completed a big project for a client and had nothing scheduled until after the holidays. So that shold give me enough time to adjust to the new equipment...