Hallway lighting is fairly straightforward. If you want to save some money, just use a couple of well placed downlights to guide your way. If you want to make it a bit more homey, the consider wall lights and/or smaller ceiling lights (my preference). A great addition to this lighting are step lights, which look fab in the evening. Picture lights and spot lights are also a great way to light hallways, using art or photos as the main source of illumination. 

Top Tip: Consider size when choosing hallway lights. There's not often (although there are some very wide hallways) lots of space. Wall lights should sit snug to the wall with about 10 cm (4") projection and look good from the sides. Ceiling lights should be shallow and look good from the bottom.