Haven't seen nearly as many as you, but I'll give it a go.
*1.
M - A (an all-time great top 25)
*2.
The Testament of Dr. Mabuse - A (nearly as good as M!)
3.
Metropolis - A-
4.
The Big Heat - A-
*5.
Le Testament du Dr. Mabuse - B
6.
The Weary Death - B (had to look this up as the DVD I saw is titled "Destiny". This is Lang's go at creating a Murnau/Weine type fantasy/expressionist film and has its moments and worthwhile imagery, but isn't in a class with Murnau's films or Caligari)
7.
Spiders: Part I - The Golden Lake - B-
8.
Spiders: Part II - The Diamond Ship - B- (again these have their moments but I found them a bit boring. Pretty simple action/adventure serial stuff that I couldn't really get into.)
Own: 3
Netflix used to not carry Mabuse the Gambler or I'd have seen it. Now they do so it is on my list, but I haven't bumped it up. I think I have a few more Lang films sprinkled there too like The Blue Gardenia and By Rocket to the Moon.
I saw both Spiders and Weary Death/Destiny via Netflix so you can check there Jim. I don't know if they still have them or not.
Bring on the Fassbinder list!!
