Topic: [Release] Update all
I do a lot of manual database work on my site, and forums often end up confused over the number of topics and replies when I clear some data. This tends to mess up a lot of post-redirecting features, so I decided to spend a few minutes writing a plugin to run update_forum on all forums. It's ridiculously simple, but I find it handy. Plus the comically large button is fun to use.
Edit: this one does it much better.