What language do you sugguest?

[TheLoser]

I have been playing poker professionally for a few years now, I have a lot of free time on my hands and have been thinking about learning a second language. Seeing as I play live poker fairly often I thought it would be cool to know what some of my oponents are saying so I think Cantonese would be the best choice, any thoughts? Are most of the asian players speaking cantonese? Also has anyone ever tried the learn by yourself CD's or something similar and have any comments and or sugguestions? Thanks.