playback memory (resume play)

[El Negro]

When watching a BD movie with the PS3 and i turn it off then turn it back on at a later time, some movies will continue right where i left off including subtitles on while others don't. Example is Halloween which i havent seen in about a month but if i pop it in the PS3, it will continue with the ending credits where i last left off but if i start watching the Guardian, it will start off with menu even though i left off in the middle of the movie before turning off the PS3.

Does this depend on the movie or is there a way to have all movies continue where i last left off?

Just wondering because sometimes i don't remember which scene i last left off on and this would really help.