Two-card Stud poker. One card is dealt face-down, followed by a betting round, followed by one card dealt face-up, followed by a second betting round opened by the player with the highest card showing. Hands consist either of a Pair or a High Card.
Obviously, this game is one that may require some 'spice' in order to be enjoyable. Suggestions include playing High/Low, or even including a draw of one card and an additional betting round after the second betting round.