Having grown up about 20 minutes from Atlantic City, I'm no stranger to casinos. When I was younger (but over 21! cough) I learned to count cards, a tool used by Blackjack players to help them gain a statistical edge over the casino and thus, in a perfect world, win money over the long term. It appealed to me mainly for the allure of beating the casino at its own game (literally). While every other game in the casino has a negative expected value over the long term, the card counter really can beat the house (I'll outline card counting in more detail below).
Something just happened in New Jersey that rekindled my interest in counting: a casino offering Blackjack with live dealers online.