The sqlite db contains a imdb column but it seems like the author forgot to include it in the fts4 index, meaning one cannot search for "tt9916362" even though it's right there in the database. It's a shame because this curated mapping is the most useful aspect of RARBG.

FYI, this dump has 826'201 magnets (torrents) with an associated imdb ID and 2'017'490 without, including lots of porn but also random music and software.

Category breakdown (careful though, most items aren't categorized or use a category code I couldn't interpret):

      XXX ( 1):     2,255
      XXX ( 4):       607
   Movies (14):     3,206
   Movies (17):   117,440
       TV (18):   198,314
    Music (23):    11,621
    Music (24):   471,161
    Music (25): 1,339,739