I put my key into the starter, turn it, it starts, no problem, and then I throw it into reverse, release the parking brake (which also turns on the headlights), and the engine dies a horrible sounding death.
From the back of the van a small voice says, "That's not good."
Luckily, the Eurovan's backup battery started things, just fine, after I'd recovered from laughing so hard and started it again. I let the alternator work for a while before trying to drive it. No problems. Whew.