Below are two recommended resources for SE spider lists:

www.fantomaster.com/fashadowmaker0.html
www.iplists.com

The main purpose of these lists is to use the with cloaking. For example, if your server detects a "visit" is from one of the IP addresses on the list, your cloaking script knows it is a serch engine, and therefore shows them a highly SEO'ed page.

Simply:

Real person gets one page...Either a good looking, real content page or affiliate page, etc.

Search engine is shown another page...Possible a dynamically created page, one each for a ton of keywords.