general everything about music, going out, meeting friends,walking in nature, other arts and culture, pc and internet, watching movies,.....
people who are also in (heavy) music, bands, friends, girls,....
rock/hardrock/Metal, hardcore, Punk, Oi!, Gothic, psycho, rock & roll, ska everything that is based upon guitars and drums. from melodic till brutal, from basic till progressive. some names ; iron maiden, udo/accept, aerosmith, heart, primal fear, dragonforce, exodus, slayer, arch enemy, anti-flag, social distortion, pro-pain, nightwish, sirenia, amon amarth, scorpions, madball, agnostic front, terror, pennywise, anthrax, hardsell, deadline, overkill, ac/dc, within temptation, argy bargy, the exploited, ozzy osbourne, vader, legions of the damned,..... and many more
action, thriller/horror, adventure, westerns and if it's a good one, a comedy or a romantic
not much.... some sports and films
comics or geographic/natural books
not somebody special : )