This Jimmy Kimmel Live skit about the Leno-O’Brien/NBC feud suggests that the Ken Burns-style documentary has become a permanent fixture in our cultural lexicon. Other examples can be found here and here. You will have to look closely, but when they get to photoshopping the famous photograph of Lincoln and McClellan in the tent at Antietam the audio doesn’t match the video. It’s a funny little video. By the way I am Conan supporter all the way.
Interestingly, this film was done in 1982, well before the YouTube Era. You will have to excuse me, but for some reason I find this sort of video to be quite funny. This one clearly reflects the persistence of the “Grant the Drunk” narrative. A more recent video that depicts Grant with bottle can be found here. Enjoy.