Arabic

The Arabic Language (العربية) is very different from the English language in many ways - reading, writing and speaking. When written, the language is written from right to left, or 'backwards' for those who speak English. The alphabet itself has 28 letters in it, almost all of which (with six exceptions) have three different ways of being written depending on whether it is at the beginning, middle or end of a word. Furthermore there are twelve different diacritics which can be put on an individual letter when written, changing the way it is pronounced completely, making Arabic an extremely difficult language unless it is your native tongue.
Here is a video teaching some of the basic greetings in Arabic.