In the recent thread about someone blowing a bunch of lamps in a Strand SL, the idea of running a preheat macro was suggested. I'm curious if anyone does this on a regular basis as part of their preshow? A comment about not running cold lamps was made in that thread. But when you consider it in terms of how hot they get at full, aren't room temperature lamps also quite cold? Let's face it the difference between a lamp from the refrigerator and a lamp that's room temperature is insignificant compared to the insane temperatures that filament will reach in seconds. Anyone know if there's any real evidence that preheating does any good? Do you do it?