Yes! Finally a place to find the newest and bestest quicklook plugins: http://www.qlplugins.com/
My personal favorites so far:
The only thing I wish I had was one that let you look at more and older M$ formats. Particularly PowerPoint. Why is it that PPT files are roughly 50/50 on being able to be previewed with quicklook? That’s the format that I use it the most for.