The May 2011 issue of Brides magazine has a decent list of websites organized by every category for wedding planning, from invitations to favors to DIY craft sites, etc. I just thought it might be helpful to know that it's in there, even if it means reading it while you're at the store and writing down the sites you might find helpful (like I did when I was in the planning stages).
Also, local peeps, I'm gonna put a link in my sig for wedding stuff that I have for sale. I've posted on the classifeds forum a few times and I've still got some stuff left if you wanna take a look.
Good luck with the rest of your planning! And HAVE FUN!