Could be something similar to Juno's Danalite linear undercabinet lights:

http://www.junolightinggroup.com/brand_danalite.asp

EnvironmentalLights.com offers LED under cabinet lighting systems!

http://www.environmentallights.com/LED-Under-Cabinet-Lighting_C347.aspx

Quality Light
High brightness, natural color, flawless dimming performance and useful accessories – our light bars have it all. Compare our prices against other LED under cabinet lighting, and you'll know why Environmental Lights has set the standard for excellent value in quality LED under cabinet lighting.

Low Profile & Linkable
Use our top quality, linkable LED under cabinet lighting in kitchens, dens, entertainment centers, laundry rooms, closets – anywhere you want great light in a tight space. The LED light bars are less than 0.65 inch thick including the mounting clips, and will hide behind the lip of almost any cabinet front, under shelves, inside cabinets and closets.

We also offer optional peel-and-stick opaque diffusers in the same lengths as the light bars, which help to disperse and soften the light.

Dimmable
LED under cabinet lights are easy to wire, bright and dimmable, too! They barely use any power, so you’ll save on electricity costs (saves around 85-90% versus incandescent light). Create a soft ambient glow or a vibrant atmosphere with our dimmable lights – in both soft (warm) and neutral (cool) white colors.

They are LED fixtures! Thank you Enviromental Lights for the great information!

LED is an awesome choice! Hopefully the price will soon come down a bit on the LED lights.