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.
If your cabinets don't go to the ceiling consider adding lights above the cabinets. Using a more powerful light source such as a T5 fluorescent increases the reflectivity of the ceiling thereby increasing the light in the room. While increasing light levels is important it is equally important to minimize glare. Use matte finishes to reduce light flares and glare.
Track lighting got a bit of a bad reputation in the 1990s but when used properly it is still functional and beautiful especially for the kitchen. Pot lights aimed straight down will add general illumination but not necessarily hit the counter. An angled ceiling light on a track can put task lighting exactly where you need it. Undercabinet lighting can also achieve a similar effect. Combining both will make task lighting in the kitchen look effortless.