catalogs.google.com <- great for the holidays
froogle.google.com <- ditto
news.google.com <- news from many different sources
groups.google.com < newsgroups
labs.google.com <- things they are working on

search modifiers:
site:xxxxxxxx search only in that domain - eg shakespeare site:edu
inurl:xxxxxxxx searches for your search terms only in url, not rest of page

I get more impressed with google the more i research.