Why do almost all Woody Allen movies contain the same font style of opening and closing credits?
I've watched Blue Jasmine, Match Point and Vicky Cristina Barcelona. All 3 movies contain the same font style of opening and closing credits.
The font is EF WINDSOR Elongated or a heavier weight of EF WINDSOR Light Condensed and it seems that Allen simply liked it so much, that it became his signature:
The story goes that Allen was looking for a typeface for Love and Death (1975). At the time he ate breakfast in the same New Jersey diner as Ed Benguiat, the great American typographer (and jazz percussionist), who recommended Windsor. Allen liked it, and that was that. Windsor became a signature of his films, along with old jazz tunes, thick-framed specs, fast-paced dialogue and neurosis.
This page provides a very good analysis of the subject and a complete list of his films (up to 2014 Magic in the Moonlight) with information whether the credits font comply to the EF WINDSOR style or not.