There’s quite a TV reunion occurring tonight. Pam Dawber, real-life wife of Mark Harmon, hasn’t acted on television in 15 years, but she shows up tonight, playing an author who sparks an immediate attraction with Robin Williams’ Simon. And no wonder: They demonstrated lots of chemistry before, as costars of Williams’ star-making ’70s ABC sitcom, Mork & Mindy. This one will be worth watching just for the closing credits outtakes reel.