Simpsons Hit and Run was such a treat when it released. The amount of love for The Simpsons as a series that Radical had just oozed out of every pore of the game. It's full of fun little show nods and quips and is just a joy to play
Loved it as well. Also play a lot of Tapped Out and have for years for the exact same reason - it's just got everything that has ever been in the Simpsons and it's such fun to just build the world and watch the characters wander.
I think often about trying to figure out how to strip the assets and build an open source clone for it for when EA inevitably kill it and deprive the world of it.
