I know there's multiple bitcoin gambling sites, and I have great experiences with SealsWithClubs in particular (and it's growing by the day). Bitcoins will be in high demand as long as online gambling stays illegal because more and more people will learn that it is in fact possible to play games such as poker for real money from the USA. I think this is just another reason why bitcoins are very promising for the future, as millions of dollars transfer hands every day at poker sites alone.
I think the bitcoin haters are going to be proven wrong when bitcoin gambling takes off and becomes the new norm for all sorts of online gambling from America, and even other countries. I used to doubt bitcoin itself, but it's really amazing how it seems to be revolutionizing the whole gaming industry, while not many people are taking note (at least not yet!). Huge buying opportunity still I think.