I think my favorite "exotic" type is Steel. I like their designs a lot and I always seem to have one on my E4 team, so it's not a surprise that I'm pretty interested in Honedge and it's evolution. Although despite liking Steel, I prefer Tyranitar to Metagross. I guess Dark could be considered my second favorite, since I like a good number of the Dark Pokémon designs as well and I gotten some new favorites in the form of Pancham, Inkay and their evolutions.
I got my wish for Breath of Fire VI.....but you know the rest. *sits in dark corner* http://neogaf.com/forum/showthread.php?t=641219