Those interested in the Middle East find teaching English in Manama is a good start, as Bahrain is the most liberal of the Gulf countries. Most jobs offered are in private schools located in a city such as Manama, and usually employers require a TESOL certificate.
Zeynep taught for a year in Oman, but missed the touch of western life, and found that Bahrain was an excellent compromise. Research her article on why Manama might be the perfect place to teach abroad.