WordPress rocks polka dot socks. Yes, rocks. As much as I hate paying for a theme when they can be so easily obtained as open source or hamfistedly* coded, Thesis may be worth a look. A developetrs license may be had for under $200, SEO is ready to go and type treatments are well done. Read more about it here: Thesis WordPress Theme Review. See an implementation here: Print Magazine. Check out a tutorial here: Thesis Theme Tutorial.
*It’s a word now.