Ive purchased The Sims 2 DVD Edition, The Sims 2 University, The Sims 2 Nightlife, and The Sims 2 Open for Business, and I absolutely adore the endless gaming possibilities that are unlocked as each expansion pack is installed.There is one draw back with Open for Business, however. I've found that should I not have Nightlife, Open for Business would not be nearly as fun. That said, you couldn't run a Car Dealer ship, Nightclub, or Restaurant.So if you're thinking of getting Open for Business, I strongly suggest that you also get Nightlife if you do not have it already.I've created two series of "Sim Big Brother" using The Sims 2 over at a fansite, and plan to create a new production called "Sim Restaurant Rules" when I get a chance (Nightlife and Open for Business is required to do this)