I'd say if it's a 2-prong, no, but if it's a 3-prong, it's OK. The problem is that if it's accessible, you can't have a bare bulb, but if it's inaccessible to protect the bulb, it's not much use for the plugs. Also, cords shouldn't be in close proximity to the bulb. So even though the fixture itself might be OK, it would be hard to find a legal application...
If they're not illegal, they should be! I put one in my attic, though. Right above the access hole, so you can reach up and pull the cord. I know, I'm a bad boy, but it's too convenient not to!
[This message has been edited by SteveFehr (edited 11-30-2006).]
