MOTORHEAD!!! WOOOOOT!
I am extremely eclectic - I've got a 9-yr-old daughter who insists on modern pop/hip hop... interestingly, I've found a couple of musicians in and amongst the insanity and inanity (Adele, Pink, Shakira are decent).
I've got a serious bluegrass Jones (I play the Mandolin as well) that fits well with an Old-Time and Irish habit...
Then when I get antsy I listen to Metallica, Fishbone, Nirvana, Megadeth, Scorpions, Black Sabbath...
I'd guess my general "Background Music" is classic rock of the early 70's and earlier variety with a heavy tilt toward Rolling Stones/Who/LedZeppelin type stuff...
Every now and then I will break out a bunch of rap (Yes, RAP!! HAH!!) in order to annoy everyone within a mile or so...
Right now I am listening to my kid play Christmas Carols on the piano. Yes. Christmas Carols. Sigh.