Ultimate WordPress Themes: simple, clean, corporate, funky, awesome!
Here is what I think is the ultimate list of Commercial Wordpress Themes. They are beautiful, functional, and there's a ton of designs to choose from. And all of the service providers offer customization. Look at all the sites, there's nothing that you want to miss. Then make sure that the theme you want works with the WordPress version you're using or upgrade to the current version. They have great support too.
This list is going to save you thousands of dollars, so remember me in your will or sign up for some hosting from the links on this site!