Not quite enough glass to get the shot I wanted - used a 300 f/2.8 and a 1.4 tele on an APS-C Nikon body. What was really amazing to me was how hard it was to get good focus. I ended up using a new trick of turning on the live view and then zooming the live view to check focus.
(Sorry about having to repost with a copyright on it, but people from Facebook were stealing the image and not giving credit or linking back to the original)