Check out www.hipharp.com.
I just found out about this great harpist/singer named Deborah Henson-Conant.
She has taken the harp to completely new levels. I would strongly recommend checking her out.
You must have been listening to the “Bob and Tom Show” on the radio yesterday morning, too! 
Yes, I did check it out! Another one for our C.P. list, too. There aren’t too many rock harpists around, unless you count that guy with the Afrocelts. Of course, remember there’s a guy who plays AC/DC’s “Thunderstruck” on the bagpipes.
If you want something also very good but mellow,