Went to the store, and noticed that the digital readouts in the dash were flickering, but everything else was fine.
When I came back out, other than the door chimes, the heater fan light, and some flickering indicator lights in the dash, the entire electrical system was dead.
Tried the key a couple times, nothing
Checked the battery, ground cables, fuses, and relays to find nothing
On a hunch, I tried turning the key back to accessory ....
The dash lights and radio came on, so I tried the key again, and other than the fact that all the gauges pegged out for a few seconds, everything was normal