Last night I watched Harvard Beats Yale 29-29, a documentary by Kevin Rafferty, about a single extraordinary college football game that occurred in 1968. I highly recommend this movie to anyone interested in the art of documenting the play of games, of any sort.
The film interweaves footage of the game - which exists as a single, no-frills, televised tape - with interviews of its players, who have been living with its memory for 40 years. The subtext is how profoundly a single game affected them that they could remember it so vividly; Rafferty frequently juxtaposes their memories with the filmed footage of the events they describe to prove this (as well as to display a couple of notable exceptions).
Structurally, it inevitably reminded me of our own Diplomacy episode, with the notable absence of any hovering narrator explaining the game's rules. The voice of the 1968's game's TV announcer is preserved, though, and becomes invested with an unusual poignancy when put into this film's context.
I assert that this picture is worth watching even if you don't care about - or don't know anything about - American football, but feel free to read Zarf's Guide to Watching the Football first if you wish (noting that it's optimized for professional playoff games happening four decades apart from this one).