I use K Lite Mega Codec Pack for most movies because it can play wide range of film.
But sometime I use Windows Media Player to play anime with some unique subtitle or some type of Music MV
http://www.filefactory.com/file/2tz8rjbohvet/n/[Final8]Black_Rock_Shooter_-_03_(BD_10-bit_1920x1080_x264_FLAC)[119C7ED6]_-_ANIME-SHARING.COM.part2.rar
found dead too...