If you haven't gone there yet, I'd start with the SharePointâ„¢ Products and Technologies Web Component Directory at
http://www.microsoft.com/sharepoint/down... and then explore the free web parts directory at
http://www.wssdemo.com/Pages/FilterLinks... . The SharePoint Customization Kit at
http://www.sharepointcustomization.com/r... has downloadable templates, tools and web packages - free of charge. MSD2D, a popular resource for the Microsoft Exchange, SharePoint, .NET and server security communities at
http://www.msd2d.com/Webparts_view_03.as... has a large directory of free and trial web parts in a host of categories, complete with peer comments and implementation discussions that can be a big help when you're just starting out with the SharePoint model. Registration is free. The SharePoint Resource Portal at
http://portal.sharepointsolutions.com/We... has some great tips - especially for the non-programmer - for implementing and customizing web parts and is a great resource as a whole (be sure to navigate up to the home page and explore at will). Advis has some killer web parts, and even their best, and somewhat costly, web parts are available as free demo versions - many are even free of charge. And no list would be complete without giving props to Adam Macauley and all the people at CorasWorks, a hosting company and consultancy specializing in everything SharePoint. Adam's built a good many of the free web parts on the Microsoft component directory, and some of the best are traditionally available either free of charge or as full-featured demos in their sandbox - all from their site at
http://www.corasworks.net/Products/Softw... . Take a look at their vertical market and industry-specific solutions to see how the various parts work together and what they, or similar components from other sources, can do for your user community. And this is just a start. I have a large web part catalog and resource directory that I share with my clients, but space and time limit how much can be shared in this forum (or at least this post). Feel free to msg me anytime at buck@sfsharepoint.info . And best of luck to you and your team with your own SharePoint rollout.