I can provide you with a ton of links that talk about the sport being real:
http://www.mysanantonio.com/entertainment/columnists/cquinn/stories/MYSA051406.0Z.quinn.3b483e1e.html
ufc-ultimate-fighting.gungfu.com/
Here is review on Amazon that talks about how it is real:
http://www.amazon.com/gp/product/B00012QLFU/002-9444190-5068041?v=glance&n=130
An post on Yahoo talking about how it is real, but WWE is fake:
http://answers.yahoo.com/question/index?qid=1006041317748
I think the best way to convince someone is to sit them down and watch some of the fights. There is no faking the elbows to the head that creates a 3" cut that oozes out blood. At the end of the longer bouts the fighter's face will be swollen and bleeding.
I do hope this links will help convince them. It's very real!
Regards,
Ryan
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