I missed this back in December (which explains why it's under Sagestone, and not under NuSoft Solutions), but Kevin Schultz, Kevin Schuler, and Matt Hessinger have an overview of code snippets using Visual Studio 2005 Tools for Office on the MSDN site. According to Matt, there are 200 snippets that demonstrate the Office API.

Kevin Schultz works for NuSoft Solutions (who merged with Sagestone at the beginning of the year).