Ok, I finally created a BrickLink account.
I spent most of today "hunting" for all the pieces I needed, and trying to only buy from two sellers or less. It took a while (especially because I had never used BrickLink before) but I eventually found everything I needed (and wanted!). All pieces for Christmas presents for my family. So far, I'd rate BrickLink 5/5 stars. It is an impressive website.
So? What are your favorite things to buy at BrickLink? Anyone have a resource for cute, little models with build instructions and part lists?