http://www.palabea.net/ - social network where you can meet speakers of various languages, do language exchanges, etc.

http://www.mct.go.kr/hangeul/index.html - Korean through English

http://www.lifeinkorea.com/language/Graphics/hangul.gif - Hangul (Korean) alphabet

http://www.aeriagloris.com/LearnKorean/ - Practice recognition of Hangul (Korean) letters.

http://www.csus.edu/indiv/s/sheaa/pr.../hiragana.html - Hiragana (one of the Japanese alphabets) practice

http://www.realkana.com/hiragana/ - Hiragana and Katakana practice

http://forums.qj.net/showthread.php?t=136489 - Video flash cards for practising Kanji, katakana and hiragana, intended for use with psp but should work with other devices that can play videos as well as on computer

Nice idea, comrade.

www.sharedtalk.com-A networking site for language learners. You can make an account, customize your profile around your native language and ones you want to study. Has text and voice chat for practice.

http://lang-8.com/- Like Myspace/Livejournal for language exchange. You can make friends, customize your profile and join groups. You write "blogs" in the language you're studying, and other will correct your mistakes for you. Very useful to practice your grammar, syntax etc.

http://www.kidtaja.co.kr/-Korean website that hosts hangul typing games for children. Great if you're just learning to type Korean on your computer.

http://www.omniglot.com/-Huge index of hundreds of languages and writing systems. Has pages with summaries of different languages and links to websites specific to them.

http://www.zhongwen.com-Biggest online Chinese dictionary.

http://www.spanglishfun.com/-Another language networking site, but this time specifically for Spanish.

http://lomastv.com/land.php-Online video site, offering video immersion in Spanish. Videos have Spanish/English subtitles and different types of videos. *Costs a monthly fee*

There is the Michel Thomas method, which you can get with Bittorent. It's illegal to get them that way, so won't recommend you people to download it. I just say that you can do so ;P.

Skype could be used for text or voice chat to practice the languages.

this is an addon for firefox that replaces the first letter of a word with the kanji for the word https://addons.mozilla.org/en-US/firefox/addon/7208
it may also have other languages soon