The 2013 edition of 'Leonard Maltin's Movie Guide' (which was the last one published) states it contains entries for 'more than 16,000 films'. I used to get an updated version every year, and it seemed like there were only around 300 - 400 new entries everytime
Admittedly this mainly contained generally well-known US and UK titles, with a smattering of European, Australian, Asian, African and Russian titles - i.e there were no low-budget exploitation films, direct-to-video movies or television 'film-of-the-week' things
If the question was about film AND TELEVISION, then I agree it would be many millions, but films alone... I think 680 thousand is fair
16,000 isn't many. The Radio Times one i got had around 24,000 in it.
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