I am a big fan of the
English Video Club on Theresienstrasse. . The only problem is walking through the door the first time as it doesn't have a shop front onto the street and even now I sometimes walk right past it.
Their DVD collection is superb. Old classics Film and TV series (I never thought I'd get to watch "V" again or the English miniseries "House of Cards"), and up to date hollywood new releases and docu films that appear there before often before they hit the German cinema. The guy who runs it is a big film and especially Sci-Fi buff and I think their stock selection is great. They also stock most of the best German films as well, mostly with English subtitles (Tip-Untergang with English subtitiles is available in store and s a must see).
As for overpriced, I don't agree. Under €20 a month to basically have access to more films and TV series than you have time to watch seems more than fair to me. Before someone tipped me off I spent more than that every month in Duty Free, just keeping up with English comedy.
The only downside for me is that they still haven't got their online database and ordering up and running, but I was told they are working hard on that.
As for others, Millions of Images used to be a favourite as well, but since their move into Amerikahaus they have really gone down hill. Also if you rent more than 5 movies a month the EF+VC makes more sense and the videotheques I just find soulless and at peak times the queuing for a terminal at my local shop is unbelievable. They are also no good if you want to watch the latest series of 24 or Buffy etc...