The most common use of up lighting is in a recessed cove around the top perimeter of a room. To maximize light output use a T5 fluorescent or LED light source that will wash the ceiling with light. This helps to create a brighter ceiling that bounces and reflects light throughout the space without glare. Combine this with lots of natural daylight to increase the overall light levels in a room.
Although floor lamps and table lamps obviously differ in their typical size and placement both have the ability to add gentle task lighting for reading while also infusing a general glow wherever they stand targeting anywhere from the center of a room (say on a sofa table) to a dim corner.
As you evaluate the status of your lighting style keep in mind that lighting also functions as art that helps define your style set the mood and perform practical tasks. Think of adding light in unexpected places such as a chandelier in the master bathroom. And consider using light in unconventional ways — such as using hanging pendant lights as reading lamps.