SWC is my go to for poker games. There are many tables that are filled by real persons and they have freeroll tournaments.
There are many other poker sites but most of them have empty players and the freeroll tournaments are filled with bots.
Betcoin.ag, Nitrogensports too provides poker on their website.
Yes for the poker i would only recommend
Bitcointalk SwC Championship Poker Series(50 mBtc added by SwC). You will play here with real bitcointalk members here and you can't get such an experience anywhere else.