I've got a few playlists on my iPod:

 

Anime: Has anime opening & ending songs.

DDR: All my DDR/Dancing Stage songs.

House: Songs that I started listening to because I heard them in a House episode - I used to listen to this playlist a lot more than I do now.

Recently Added: About 15 or so of my most recently added songs.

Requiem: A couple of songs that Requiem linked me to :P

Spyro: The entire Spyro the Dragon (game) soundtrack.

Umineko: Used to be in the Anime playlist but it's about 40 or so song strong now with Umineko no Naku Koro Ni Background Music & the OST in it. It's got some really, REALLY great upbeat songs for walking to like Mirage Coordinator, Dream End Discharger and Resurrected Player. There's some really nice piano pieces for when I want slower music too.

On-the-go: I recently made an on the go playlist with all the slow/instrumental songs from the Umineko playlist so I could listen to them in bed :P

 

I'm currently totally into Umineko BGM atm so I'm listening to that all the time.

Nope. I just listen to whatever I feel like at the moment.

 

If I created a playlist of all my 80s songs it would include pretty much all the music I have. :P

I'm more of an album person too. I've got a couple of playlists on Spotify - 'albums' that I haven't downloaded, 'songs' which are generally upbeat, summery, Noah and the Whale - 5 Years Time kind of songs, and 'revision music' which is pretty much albums I can play as background music, stuff like The Appleseed Cast and Sunny Day Real Estate, stuff I love but don't have to really pay attention to.

 

A girl made me this CD earlier this year before summer and it became the only CD I listened to in the car throughout the entire summer. I just started listening to it again before going to bed and I cant describe the feelings when I listen to Big Sur, practically every memory from my summer flashes throughout the song. It's awesome :)