What does your diesel's morning warm up look like?

 I have to be honest, I don't know if the '97 would've made it this far into this arctic winter without the help of its trusty block heater. But on mornings where I've forgotten to plug the truck in, it always reminds me that I should've. How hard have your cold starts and morning warm ups been this year? Have you killed any batteries, glow plugs, glow plug relays, or had to address grid heater issues? And have you had any problems with fuel gelling? When we reached -15 F a few weeks ago, 18 trucks showed up at a local, two-man diesel shop for fuel gelling issues!

 Anybody switch to lighter weight, or synthetic oil solely for the winter months?