I found a new great site that sells WordPress templates. Well, actually I rediscovered it. I bought a theme there a year ago. Even though it is not free I highly recommend you to take a look.
Check out Woo Themes WordPress templates. Yeah, they cost a little but if you are planning on bloging a lot it is worth it.
Fresh news theme is my favourite.
Check out the Arthemia themes. They are really good if that is what your looking for. Good luck on your new installation!