Great tip Brian, works well.
The reverse works well on Ford body / bed mount bolts, heat up the bolt and let the theat sink into the bolt to soften the blue thread locker. Much easier than breaking the J-clip and cutting the heads off.
Another tip for screws, use valve lapping compound on the tip of the screw driver. Takes up any slack and provides traction so the driver doesn't cam out of the screw.
PB Blaster is great stuff, spray it on and let it soak in then go to town.