LaTeX.org

Well, yes. But, I somewhat disagree on the basics of LaTeX. To my mind, LaTeX's philosophy is to separate content and style. Keeping with the default style is great...if you want your document to look like a million other documents.

I guess what I'm asking is if there's a LaTeX equivalent of the ...

I've been using LaTeX for years, but I've never come across a decent website showcasing the best of the system, with clear instructions on how to achieve the effects presented. The standard document classes really get boring after a while, and before somebody points towards packages like KOMA and ...