Your lectures are very helpful and thank you so much for the effort, my only wish is that if you can please give the lessons by a voice over and showing only the board, because than we will be able to follow what you are saying with what you are writing or wrote before starting the lecture, hope I was able to explain my self correctly :)
at 3:34 you said "deoxypyridine 5'-triphosphate", but I think you intended to say "deoxycytidine 5'-triphosphate"...buuut you're still better than my professor(s)...