Never got to see Larry Jennings live. The big L&L book on his magic is my favorite poorly written magic book. The guy came up with some awesome routines. I am a fan.
With that said, nowadays bad video clips are inexcusable. If you flash on a take, do another take. You can fool the camera. If you're not watching yourself in video to hone your presentations you're robbing yourself of a great tool to improve. If you can see tell-tale hitches, tells or flashes when you rewind:
You're a lousy magician.
You don't practice and rehearse enough.
You can't routine or pick tricks well enough for your skill level.
I thought the video of Jenning's routine was beautiful magic. If you caught hints or tells, ask yourself, "Does my magic look better?" I'll bet you cannot do the cup and balls nearly as well as Jennings could, dead drunk on his last day on earth.
I shot this video, of myself doing the cups and balls. I do not have Jennings charm, wit or ability with real people. I do practice to the point where I kill a hell of a lot of tells.
Jennings on a good day could out magic all but one or two on this board. He'd blow my crap into the next county.