These websites host various plugins that enhance the game in some way. You would do well to visit them; they have some of my personal favorite plugins. After using them they'll be yours, too.
Atmospheric Sound Effects. Hear rain while inside and other sounds.
Knights of Tamriel. Some of the prettiest armor I've ever seen.
TheLys. Great collection of mod authors and their plugins. One of the originals.
The Summit. Thousands of plugins here. Largest collection on the web.
Lady Eternity. Creator of numerous meshes. Great artist!
