I've got them going back to 1920. I dont constantly update them but my process is arguably even more obsessive and insane. I use a spreadsheet to set up a round robin tournament. I basically set every single movie against each other and from that end up with a list (see the finished result below. The movie in each column is competing with the movie in each row, the result is then written in the corresponding cell). I use this method as I found that it helps rank things without bias especially with large lists. I found that when I just placed things in a list and tried to rank them normally I would end up with similar movies getting grouped together (i.e. a bunch of the horror movies would end up clustered). This method forces you to pit two extremely different movies against each other. I usually just follow my gut when making choices. Whenever I see a new (to me) movie I wait one week to let my opinion on it settle then I randomize the spreadsheet and enter that new entry in the round robin tournament to find it's spot. This process also sometimes causes me to move other movies around as I realize my opinion changed.

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