English Harbour Poker.
As part of the Las Vegas From Home / Action Poker Network, English Harbour Poker offers a wide variety of games and plenty of opponents around the clock.
English Harbour Poker offers their players online poker tips as well as a poker blog in addition to satellite tournaments to World Poker Tour events and freeroll tournaments.
They also run a "Happy Hour" promotion every day and a Player Option points player rewards system. A "How To Play In Tournaments" tutorial available on their web site is a nice find for new players.