I like Bonus Hold 'Em, which is also known as Carribean Hold 'Em poker - it's essentially Texas Hold 'Em played against the house. But I never ever play the bonus - that's a sucker bet. If you run hot, and scale your bets correctly, you can really win big (duh). I think the most I ever won was $1,800 in a single session.
Edit - to be clear, that meant a NET $1,600 for that session.