I'll include just a few of their ideas and a couple of mine here. Here's a couple of ideas I came up with very quickly. The political potential is really interesting. A San Francisco Board Watch Tour might be very interesting as well. As the later depends largely on the former, I encourage tour creators to use annotations appropriately and sparingly.
Annotations can be very informative OR very annoying.
Tours, of course, will have to be checked for dead links as well. This is a great web authoring site. There's a ton of useful stuff here for web authors. You can find both articles and tutorials, tips, and ready-made to download applets and graphics. Well worth a bookmark if you have a web site.