I'm on vacation this week, technically, but I was checking out the newsgroups and saw a really neat tip that I didn't want to forget about before I go back to work on Monday.
Over on the LT discussion group, a user asked how to export a list of layers & layer properties to Excel. John Schmidt replied,
<Right-click> -> Select All in the layer manager, then <Ctrl><C> to copy to
clipboard, then Paste into Excel.
Sure enough, it works. I found that you have to be a little careful when selecting the layers if you're using LT 2009, with the new Layer Palette, since it sometimes thought I wanted to copy objects from the drawing. But other than that, it's a quick and easy way to pull a layer list out of a drawing.