Heather has updated her SharePoint Resources List with a bunch of new content. This should be your first stop for tips, tricks, and general How-To's.
If you're looking for a list of tools and utilities, including commercial and non-commercial software, web parts, add-ons, and the like, I maintain a brief list here and Joris Poelmans has a monster list here.
BTW, whatever happened to the Sharepoint Template Project???