Work Playlist

I'm certainly the type of person who likes to have music playing while I work. 

If I don't have to read or really concentrate, I usually have Pandora open. But, then I use up all of my skips and I get frustrated, so I've started writing down the songs I really like that come on. I then make my own playlist that is catered exactly to what I like to work to. These are the songs that I'm really loving right now, but my playlist continues to grow and develop.

... the irony in this is that I have unlimited skips for a playlist that is exactly what I want...

oh well. 

what do you listen to while you work?