Quoted from WaddleJrJr:Wheel of Fortune and World Poker Tour.
Many people don't like the themes on those games, but there's no denying how incredibly well integrated they are.
Agreed for WoF, but not completely for WPT (which I own). The reason why I am partially disagreeing is you are never playing against an opponent in WPT, which is a essential Poker feature... WPT has a great ruleset, theme integration is good but not exceptional.
TWD and LOTR are high on this list
(and TSPP is cool)