I to shall start with what I hate:
Rap *sudder* Thers like five "lil' " rappes now, and everything sucks....
Pop... Crappy boy bands and stupid freaks, dressing like lil pimps and such.
Country... I personaly don't like (generalization) listening to old giesers sing about roping cattle and stuff.
Heavy Metal, etc... Very painful to the ears, very indeed.
Now what I LIKE: Um, alternative, punk, rock, um rock stuff, Yea... Like um, Greenday, Five Iron Frenzy, The Offspring, One Man Army, Rancid, Less Than Jake, AFI, 311, Dropkick Murphys, Eve6, Garbage, Stroke 9, The Ataris, Sum 41, um, yea... And classical and disco are ok
EDIT: I don't see how, but I missed Bad Religion
And The Beatles! Geez, I suck.