I think bitcoin poker will really establish the BTC.
I disagree. All you can get with bitcoins by playing poker is bitcoins. Gambling is also nowhere near as big a market as porn and it does not really benefit as much from the possibility of micropayments.
I think bitporn would be an excellent idea and if someone starts developing it I hope they will contact me.
Why not replace SharingMatrix/MegaUpload/et. al with a (user friendly) bitcoin based file host, and get all the "free" porn sites (like adultbay, for instance) to use it instead. I'd actually pay for the increased bandwidth and concurrent downloads if I didn't have to risk my personal and CC details and those evil, evil automatic recurring payments.
This way we can use porn (and music blogs) in a roundabout way.