We have the Kelso lamp from CB2. Actually, we have three of them (two are in the pic above). They are so simple and work so well that we kept going back for more. The finish is a nice powdercoat of super glossy white paint, the base is very weighty and the construction feels sturdy.
The halogen bulb is task-lamp bright, even on the lower of it's two settings - so we use IKEA dimmers on them (but, then again, we use dimmers on every light in our apartment, so maybe that's not saying much...).
We are at around two years of everyday use, no problems to report or bulbs to replace as of yet.
Priced at $49.99, available at CB2.