Those of you running wordpress blogs ... which plugins are you using?

I've got a group of them in my own "install kit" folder that go up on just about every blog I build. Some are for SEO, others are for social bookmarking, and quite a few just extend the usability and add to what I can do when creating the post.

Here's a few of what I consider my must haves:
Admin drop menu
spam karma 2
vipers video quick tags
post schedule ping optimizer
wp-autoblog
wp-stats
photopress
wp-backup
technorati
semi-subscribe me
share-this
optimal title - but this seems to be having trouble with the latest version
dd-sitemap