U.S. Passport Services
Everything you need to know about getting a passport, straight from the U.S. State Department. You can even download a printable passport application.

Foreign Entry Requirements.
If you are a U.S. citizen planning a trip to another country, be sure to check this site before planning your trip.

U.S. Visa Services
application forms are available for download.

travlang's Foreign Language for Travelers
This site will teach you 48 languages, play sound files, and quiz you. If you need to translate a few phrases in a document, use their free online service or download a freeware multilingual translating dictionary.

Coping with Jet lag
Explains the who, what, where, when and how of Jet lag. Offers good advice on how to deal with it.

Travel Warnings
Travel Warnings are issued when the State Department decides, based on all relevant information, to recommend that Americans avoid travel to a certain country. Countries where avoidance of travel is recommended will have Travel Warnings as well as Consular Information Sheets.

International Legal Assistance
The State Department has compiled some general information on a selected list of countries and key subjects, ranging from getting married/divorced abroad to appearing in a civil or criminal case.

U.S. Customs Service
It may surprise you to know not all of your "souvenirs" may be allowed back into the country. Check here before you go to learn about about duty fees, exemptions, restrictions, etc.