Hardcore. It could be applied to probably 80% of what I listen to; crust/dbeat, grindcore, sludge, modern hardcore, Holy Terror/90's metallic hardcore, youth crew, early 80s hardcore punk (from SoCal, NYC, Boston and DC separately), powerviolence, thrashcore, fastcore in general, REAL emo/screamo/emocore...
Fairly adequate blanket term, haha.
I also like black metal, hip-hop, certain folk and folk punk, some anarcho, and whatever you would call Tom Waits.
Pop punk is a sort of guilty pleasure.
My all time favorite band is probably the WORLD!!! INFERNO!!! FRIENDSHIP!!! SOCIETY!!!
So I guess my 'ultimate favorite genre' would be 'blackened anarcho-folkrapcrustemogrindTomWaitsludgecore'.