Hi Evan,
Yes, black jack is the game where cards are counted. I saw a TV special about a guy that could keep up with six decks of cards. Given enough time he would usually, not necessarily alway, win. He was band from every casino in Vegas. All he had to do was walk in a sit down at a table and he was immediately, and politely asked to leave. He was never given a reason why, but of course it was because the house was well aware of his incredible ability to count the deck. There is a special method used to do the counting which he seem to think anyone could master.
Regards,
LelandJ