Arresting Development was stuck in a 9:30 slot with no lead in. Then it was moved to an earlier slot, but still didn't have any comparable companion.
I watched it a few times, but kept forgetting that it was on.
Same here...and the same thing happened with NBC's Freaks and Geeks which ruled the earth of my TV world a few years ago. Amazing show but was thrown onto 4 different nights and times. Nobody knew when it was on to watch!