1925: On 21 December, Sergei Eisenstein’s The Battleship Potemkin was first screened at the Bolshoi Theatre in Moscow. Eisenstein had toiled for three weeks to edit the film in time, and was still putting the finishing touches to it on the opening night.
His assistant Grigori Alexandrov recalled, “I spent the evening riding on a motorcycle between the cutting room and the theatre, carrying the reels one at a time. When Eisenstein was finally happy with the last reel, he sat on the back of my motorcycle with the can of film under his arm. . . . but when we were in the middle of Red Square, and about a quarter of a mile from the Bolshoi, the motorcycle broke down. So we ran the rest of the way!”
At that time, films were shown with a break between each reel. “All went well, except that the break between the last two reels was nearly twenty minutes long!”
Source: Ronald Bergan, Eisenstein: A Life in Conflict (1997), pp. 111–12