One of the things that resulted from my upgrade Snow Leopard was my favorite interface plugin for Quicksilver, BezelHUD, no longer working. As many know, I rely on Quicksilver for many things, not the least of which is my daily log, and I like the way the BezelHUD interface handles text entry far more than any other I have tried. The fact that it stopped working caused me to consider downgrading (yes, it is that important to me).
Luckily, my friend and hero Ben Cochran came to the rescue. He got it working again and, word has it, may even be able to make it better than before. I have waited to post about it here because it is still a work in progress and there may be some bugs. That said, I have been using it dozens of times a day for a couple of weeks now with nary a problem.