I recently had my drivers side seat recovered due to the heater problem. I noticed a squeek coming from the drivers side back and tracked it down to the [lastic panel that holds the seat adjustment controls. They are rubbing on the bottom tube of the seat. I have not done anything about it yet, but the sticky felt idea sounds like it will do the trick nicely.

If you hear the squeek from below or behind the driver you may want to check and see. Bounce a bit on the seat when the car is sitting still. If you hear the squeek then, it is probably the seat adjusters.