I first discovered this show while on vacation, but we don't have cable at home, so I was thrilled to find it was airing on NBC on Monday nights.
But it's not on tonight! Is it gone from NBC for good? Just not on this week? Moved to another timeslot? Or what?

It was a promotional tool that was only for a two-week period, to get more people to watch USA Network. So it probably won't be on NBC again. But they may start airing reruns in December to get people to watch New Psych Episodes in January on USA network, but its a long shot that this will happen.