One interesting thing to do with Google Translate:
Take the English phrase: "Break a leg."
Translate it to German
then from German to Spanish
then from Spanish to Chinese(Traditional)
then from Chinese (Traditional) to Thai
then from Thai to Turkish
then from Turkish to Italian
then from Italian to Czech
then from Czech to Japanese
then from Japanese to Filipino
then from Filipino to English
The result is "The foot was broken."
This is a far cry from the intent of "Good luck."
The only words I typed in were "Break a leg" and then basically played the telephone game with Google Translate. Once I got the German translation, I pressed the Swap languages button and then selected Spanish as the target language. I repeated this process until I thought I went through enough languages to get it totally off track, and then translated it back to English to see the results.