how do you warm up your MB?

[ajcbgray]

I'm new to diesels and have just gone back to classic cars with my 85 300d, so was wondering what you guys do for a warm-up on your cars. If its really cold out (for Atlanta, say below 40f) I let the car idle for a minute or two before leaving... any warmer I just fire it up and go. I am very gentle on the accelerator until the temp gauge starts to move, then I keep it to about 1/2 throttle till it hits 80c. BTW this is without a block heater.