Power window sticks
I searched the forum here for power window issues, all the threads I found were for electrical problems; I think mine is mechanical.
The driver's window feels loose in the track and sometimes stops halfway up and then won't go up or down. If I lift up/push down/wiggle the glass, it will eventually "catch" and start working again. The times when it won't go up or down, the motor is not turning. I think there might be a limit switch in there somewhere and the window "thinks" it is all the way up or down and won't respond to the switch. I couldn't find anything that looks like that.
I took the door panel off and couldn't find anything obviously worn, bent or broken.