Coin.Dance, international volume charts, vanity addresses, and more
Blockchain.info, A block explorer that also features stats and graphs
BitcoinWisdom, an excellent technical resource for mining stats
Poker, play poker for bitcoin. No account needed, play instantly. Interface great on mobile, too.
Purse.io, save up to 20% on Amazon.com using bitcoin
ShapeShift.io, instantly trade cryptographic assets with no account