Did you know Spanish is the 3rd most widely spoken language in the world? A few years ago I wanted to find a way to learn Spanish quickly. I looked everywhere to find a program, a book, audio programs, etc. that was both quick and fun. I finally found it with this program! It truly did the trick for me, here's the link...
Learn Spanish Now
Mandarin Chinese is THE largest language in the world. Many believe it is the language of the future. I have friends who have kids as young as 5 taking Chinese classes in school, also many involved in business are learning Chinese to keep up with their ever growing global power in the business & technology worlds. If you'd really like to try your tongue at Chinese I'd check out BBC's language center, it has tons of invaluable resources.
German is number 10 on the list of most widely spoken languages in the world (See the List Here). When I think German I think Germany, to my knowledge that was the only country that really spoke German on a regular bases. Sure German's live around the world, but I never thought it was popular in countries like Austria, Belgium, Bolivia, Czech Republic, Denmark, Hungary, Italy, Luxembourg, and Switzerland, just to name a few. If your interested in traveling to any of these countries, or if you have a personal interest in German for heritage or other reasons, check out Rocket German.
French is the language of love, one that is spoken in far more areas than France itself. Did you know many African countries consider French their official language? 72 million people speak French around the world! If that many people speak the language of love then sign me up! I've used my ruff French in many countries throughout Europe (and Canada, though its a very different Dialect). My favorite tool to use to catch up on my French is here,
French-quick & easy
Last but not least, Italian. In my opinion, Italian should be the language of love (though accents in general may qualify for first place). I have had a thing for Italian since I can remember! My time to study it has been limited, but my favorite place to catch up before I travel would be (again) BBC's Language site. Their Italian section even has games, and a quick fix section where you can download emergency Italian lessons for a quick brush-up before you leave. (Great for plane rides!) Here's the link again...
Good Luck Learning!