I meant to post this...well, months ago but I completely forgot. I found it in my Windows Live Writer's draft posts lists this afternoon and figured that, even though I'm late, its' still well worth posting.
Jeremiah Owyang maintains 'A Complete List of the Many Forms of Web Marketing' which he updated for 2008:
This document catalogs the many tools and tactics available for corporate web strategy in 2008. Even if your strategy or resource limitations restrict you from entering all spaces, awareness of the changes in our digital landscape are critical. This document is intended for decision makers roles such as CMO/VP/Director of Web and Marketing.
It's an awesome and hugely important list of, well, everything you need (or could possible want) to think about for web marketing. You must take a look at it.