#1-100: Seen 70 (70%), 45 made my list.
#101-250: Seen 57 (38%), 22 made my list.
#251-500: Seen 46 (18%), 23 made my list.
In conclusion, there's quite a few popular movies I haven't seen yet. Unsurprisingly. Rear Window (#12), Apocalypse Now (#36), and Wings of Desire (#171) will most likely be first up.
Many thanks to Wilson for putting this together so ably.