Since Pandora is blocked at work before 7 pm (no, I don't get it either, it would increase productivity if I didn't have to reload songs every 4 minutes), I tend to find a song on youtube and play the music video repeatedly. Partially out of laziness, partially because it would take longer to find a new song. So I might listen to the song 15-20 times over the course of the day before I change it.
Today's song is Linkin Park, "New Divide." Yes, the Transformers song. I really like it.
Recent songs have been Pitbull - "Calle Ocho", Jordin Sparks - "Battlefield", and Sean Kingston - "Fire Burning." Among others. I still put those 3 on fairly often.
I just wish I could play Pandora during the day!