I actually completed it a week ago, late Thursday evening, by watching the 1962 film The Loneliness of the Long Distance Runner. It was the lowest ranked entry I had left, and the title referenced a marathon-like endeavor so it seemed vaguely fitting to end with it.
Those of you who have been reading my posts for a while know that I am a lists kind of person. Back in the late 1990s I printed off the year end IMDB Top 250 list to have for suggestions on movies to watch in the coming year. That led to trying to see every movie, including ones that appeared on subsequent year end lists. Completing that has led to completing others, some larger and some smaller; some with more popular films and some with films that tend to be liked primarily by professional critics.
For the record, I have completed: all movies to ever be on the 1,001 Movies You Must See Before You Die list, all the AFI lists, both the 2012 Sight and Sound Critics’ Top 250 and Directors’ Top 100 lists, the Top 100 Movies of all time lists from Time Magazine and Entertainment Weekly, all Oscar Best Picture winners, and every single film that has been on the IMDB Top 250 at every year end since 1998. To this I can now add the current TSPDT list.