Probably mentioned in an older thread, but I got to rebuild/rewire and move the location of an old Doorbell system that was in a kitchen of a $130K kitchen renovation I was involved in. The doorbell system would drop a number down into a window of this box flush-mounted in the wall corrosponding to the door that was being rung.
It ran on 24VAC, so it was all fairly easy to work with, and was in very good shape except for the wiring itself.
Being a third year apprentice at the time, and having this project dropped into my lap, I felt pretty good about getting it done and having it work correctly.
I guess it was my first real experience with "control work" unaided (albeit, checked afterwards).
Ah, memories... BTW, When's Joe getting the nostalgia page up?