Thomas J. points to a number of new Gadgets for Spaces, including Hangman and Pong, a Mortgage rates watch, a Technorati Search Gadget, and a Gas Prices Gadget, among others.
And recently Dare pointed out problem with memory leaks in the Gadgets he's been writing. Some interesting reading for the budding developers out there.
On to plugins. Jef from Jeftek says that his list of Windows Live Writer plugins is getting out of hand, which is a good thing. He points to the list at CodePlex, to a nice post on how to write your own. And don't forget to check out wlwplugins.com, for lots more on Windows Live Writer plugins.