We bought these under cabinet lights at a garage sale, but a strand of 3 costs about $10 new. The best part? You can plug them into a regular outlet, without professional installation. I took this photo so you could see how we stapled the cord to the underside of the cabinet. The pucks don't show at eye level.
Under cabinet lights add a lot of ambience, especially when you flip off the overheads. I noticed a GE ad in Traditional Home which offers a sweepstakes and free DVD about home lighting. Fluorescents strips use the least amount of energy, and LED lights are even dropping in price.