Newtown also happens to be one of three queer centres in Sydney, the others being Darlinghurst and Leichhardt.
Also as it's near Sydney University, there are many feral student types, as well as international students floating around.
Newtown is renowned for its cheap, good food (especially Thai, said to be the best outside of Thailand).
This inner-city suburb is also the place to go for second-hand books and clothing.
A great place to go to if you're ever a tourist in Sydney, and easy to get to on the bus.