[youtube:31j1oyg5]http://www.youtube.com/watch?v=Q7Wk_i187qU&feature=related[/youtube:31j1oyg5]
Make sure you watch the other rounds, you can find them on youtube.
Anyone that stands toe to toe with Buakaw Por. Pramuk for 5 rounds is high level Muay Thai.
Lived in Thailand for a while and I think he has a Thai wife and has been retired for about 3-4 years.
I guess you are asking because you saw him on TUF and no I have not seen that episode (so don't tell me about it!!!) and yes he drinks a lot and does not sleep much and still kicks arse but watch everyone of his fights and you will see he has always looked this way (like death warmed up).
The thing is lots of Thai fighters are like this in Thailand, women, drinking, smoking and gambling. The best way to thank your trainer in Thailand is ask him what he likes to drink! and have a good bottle or two of it in your suitcase.