I've read the Bleach manga twice now and I am watching the anime (seriously, what. is this the real life? is it just fantasy? >.>) and I just had a "HEY THAT WASN'T IN THE MANGA!" moment. I also watched the second movie over the weekend and had a moment of serious flail about my OTP (yeah, I know, I already have a Bleach OTP. Kill me now. XD).
But I'm not sure if the anime and the movies are canon per se -- how much control does a mangaka whose series turns into anime/movies/OVAs/etc have over the animated stuff? And even if s/he doesn't, what is generally considered canon in an animanga fandom? My inquiring mind, let me show you it.