One thing that I've noticed about Federer is that he seems to miss a lot of running forehands now. When players get him stretched out to the forehand side, he's not able to come up with the magical shots he was once able to produce. I particularly love the short crosscourt angle he can do.
With that said, he did hit a nice running forehand up the line today.
He has magical passing shots but his running forehand has been for a while, a defensive, how quickly can I get back into the center of the court shot. Once in a while he will hit a go for broke DTL running forehand, but this is pretty rare. He did hit some quite good ones (both DTL and crosscourt) today which was surprising to me as well. That might just be telling us more about the nalbandian forehand than anything else.
Fed. also got schooled in the running forehand contest in the AO sf against djokovic. He has some serious trouble hanging in there with the djoker when these rallies take off on the hard courts. His stop and hit the forehand at the same time usually results in a weak reply and the djoker cleans up with the next shot. Djoker now on the move is just far smoother and generates more pace without sacrificing depth. It will be interesting to see how this plays out on grass.
Interestingly, one of things that nadal also does to Fed. is that when Fed. jumps to his left to hit a forehand, nadal immediately cues up a cross-court flat backhand which Fed. has trouble tracking down. Watch for it, it's automatic in their encounters. In fact he rarely engages Fed. in backhand to forehand rallies unless the scenario I described above happens. Used to in the first couple of matches, but learned quickly not to.