Yes, Cilantro and Corriander leaves are the same thing and they are grown and used extensively in Mexico which is why they are included in so many Mexican dishes. I have yet to find an oriental recipe that calls for either though. Having worked as head cook in several very nice restaurants in Houston I have extended experience in cooking all forrms of ethnic dishes and The cilantro issue is just one of a matter of taste. I will say that too much of it can spoil even the best recipe though.