With the permission of my instructor, on the promise that it was only for me to watch, I recorded a "perfect" circuit, flown by the instructor, by me holding a digi video cam and capturing his every move, and word.
I watched it a dozen times that evening, and a few dozen more the next day. The following day I was sent solo.
The idea of getting your lesson again, free, in a less pressured environment, can be good for some people. Doing it this way allowed me to be sure I hadn't missed any of the points that had come up.
I still look at that video from time to time, it gives me a standard to aim for.