Based on my experience I recommended bit777, satoshi circle and just-dice. They seem very fair to me.
yes I agree right now these sites are best sites for gambling but peoples love new sites which give some free bounty and they can enjoy this then they looking for new one
Check out SatoshiAces.com, it's a provably fair poker variant of the dice games. Check out our thread here
https://bitcointalk.org/index.php?topic=325535.0. Unfortunately our 1 BTC giveaway just ended some 12 ago, but we'll be launching new exciting promotions in the next few days!