Not too much, but much.
User Rating: 9.1 | The Sims 2: Nightlife PC
Finally, you get the ability to buy and ride your own car! Now this is one of the best and most useful this expansion pack has to offer. No more taxi drives. And you can build your own garage. You can now buy your own DJ Sets, disco light, and make your own disco. There are few more new times, like Magneto-sphere, and "many" more. Going downtown might be fun, some value.
And also, there are vampires now in the downtown. I tired once inviting an vampire to my house, and it really did bite my character's neck, turning my character into a vampire also! This is also one of the best additions, but not that useful.
Nightlife is a good boost expansion pack.