Windows Live Writer plug-in: Insert Code (C++, Javascript, HTML...) ; polaroid; picasa; geo microformat:

http://plugins.live.com/writer/detail/insert-code-for-windows-live-writer

Insert Code for Windows Live Writer will format a snippet of text in a number of programming languages such as C#, HTML, MSH, JavaScript, Visual Basic and TSQL.

polaroid:
http://plugins.live.com/writer/detail/polaroid-picture

picasa:
http://plugins.live.com/writer/detail/picasa-image-plugin

geo microformat:
http://plugins.live.com/writer/detail/insert-geo-microformat
Integrates with Virtual Earth to allow an easy method of inserting a geo microformat (latitude and longitude) snippet into a blog post.