I was bored at work this morning, and was surfing and ran across the netflix apk so thought I would install and give it a shot. I am on Miui 5.6 and it installed and worked just fine ! I was able to stream movies on 3g with a little buffering , but for the most part really worked well.
P.S. I ran this on the Motorola droid D1
Apk was from xda developers and was in a Samsung Vibrant forum , I had just did a search for netflix app on xda and this was one of the links that popped up.