This is just sooo cool!  Turn down the dimmer, and the affect is really nice!  Really accents the room nicely.  The only issues are that 1) the Halogen lamps aren't bright enough to read by, 2) would be nice if the ON/OFF/dimmer switch was up on the icicle somewhere unobtrusive.  To adjust the brightness, you have to adjust at the box on the cord.  This is accent lighting only.