SPECIFIC SEARCH ENGINES

Biography Center
http://www.biography-center.com

CiteSeer (who's citing whom in scientific publication)
http://citeseer.ist.psu.edu

INTUTE (multiple categories for education and research)
http://www.intute.ac.uk

National Science Digital Library
http://nsdl.org

OJOSE (Science Journals)
http://www.ojose.com

WorldCat (for Books)
http://worldcat.org

SearchEric.org (Education, Search Engine powered by Google)
http://searcheric.org

Time Magazine Archive
http://www.time.com/time/magazine/archives/advanced