Shakedown: Hawaii (PC)
The follow-up to Retro City Rampage, I got addicted to the real-estate portion of it, though it slows to a halt later in the game. It has been forever since I played RCR, but I felt like since that was a game piling on pop culture references, the mission variety in Shakedown was a little lacking in comparison.
KCF can't actually be a real person but he is - greengravy