Here’s something I’ve yet to get an answer to: Why has this charming Greg Garcia anthology series, which manages to tell a continuing story at the same time it presents stand-alone episodes, skipped an installment? The Guest Book, on TBS, jumped from episode four to episode six, and tonight shows “Story seven,” with no announced plans to present the missing episode – the one guest starring Jenna Fischer, as a scientist attempting an innovative, immersive form of “time-travel” therapy for an Alzheimer’s patient, played by the great Orson Bean. Regardless – don’t look for that episode tonight. Instead, look for Michael Rapaport, playing a cabin visitor with OCD, who finds not only lots of things to count in his temporary quarters, but a new way to make friends.