I like almost any type of music. Some tends to grind on me easier than others though. I prefer rock, alternative, punk, hard rock, and anything you can headbang too. I really dislike the trend that music is taking these days and will al... [+]I like almost any type of music. Some tends to grind on me easier than others though. I prefer rock, alternative, punk, hard rock, and anything you can headbang too. I really dislike the trend that music is taking these days and will always reminisce fondly about the 90s. Grunge was a good direction, but now we've got all these bands who don't know what punk or rock is, or are too interested in rapping or screaming instead of just singing.
I loved R&B in the 90s and still have a fond spot in my heart for good rap (which probably has nothing to do with what you would consider "good" rap). I find that I tend to like songs in general rather than artists, since artists change and vary.
I also love the German music scene. There is a lot of really good stuff that America never sees, or barely touches the tip of. Everyone's heard of Rammstein, but Oomph! (one of the bands that inspired Rammstein), Megaherz, and Eisbrecher are also awesome bands. Die Toten Hosen and die Ärzte play some of the best punk around (if you loved the Ramones and earlier punk, you might want to check into them), and Wizo (more of the obnoxious punk), Farin Urlaub (interesting alternative type music led by die Ärzte guitarrist, Farin Urlaub), and Such a Surge (more of the nu-rock type; tend to rap/talk instead of sing) are bands I'd also recommend checking out.
Every so often I find myself in need to indulge in some not-so-common types of m usic. For symphonic hair-metal type music, I like Sonata Arctica and Rhapsody. I also like Apocalyptica, Rasputina, and Kristarah.
And last, and probably least, I occasionally find myself enjoying songs by popstars that you normally see on the cover of the tabloids. I won't mention any names. ;) [-]