Searches across 39 molecular and literature database maintained by NCBI (the National Center for Biotechnology Information). Results are listed by database so a single search can lead to discover of different types of data. Good for a broad overview.
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Online Index-Catalogue of the Library of the Surgeon-General's Office, an index of medical and scientific publications from 1880-1961; eTK, covering medieval Latin; eVK2, covering medieval English texts; and other selected historical resources.
With prominent links to the President's Weekly Address, the NationalBudget, and the economic recovery plan, the searchable site also provides links for both current news (The Briefing Room), the administration's Agenda (nicely narrowed by topic), and ways to learn about Our Government, especially the Executive Branch.