Dr. Strangelove, Barry Lyndon & Clockwork Orange were all filmed in Britain. Trainspotting was filmed in Britain AND is in english & Michael Powell's Peeping Tom was in the Top 100 previously.  So there are British produced films in the top 100.  Moreover, Wim Wenders Paris, Texas is in English And was made in the USA.  Antonioni's Blow-Up was filmed in English in Britain.  Bertolucci's Last Tango in Paris & The Sheltering Sky are both in English.  Peter Weir's Picnic at Hanging Rock was filmed in English. Luc Besson's LEON aka The Profesional is in English & filmed in the U.S.A..  Von trier's Breaking the Waves & Dancer in the Dark are in english.  Finally, Roman Polanski's Chinatown is in English & was filmed in the U.S.A., so there are many films in this list that you would have thrown out, while I think they should remain because either their director was not American or they were filmed outside the U.S.A.