Last night, Monday, 04-26-10, I went to the Minneapolis Photo Center for a little workshop on Nikon CLS by a couple Nikon Reps. There were several stations to practice. I haven't used TTL before so it was some good practice. I normally shoot my three SB-900 in manual and trigger them with Pocket Wizards.
High speed sync at work, 1/8000, f 5.6
slightly slower speed at 1/2500, f 5.6