The episode "The Psychic" features Bill Bixby's first wife, Brenda Benet. (By the time the episode aired in February 1980, the couple had divorced.)
Although the writing team of Karen Harris and Jill Donner is credited, this was actually Donner's first solo writing effort.
Things go full circle here, when the finale, also featuring Jack McGee is filmed in the same boxing arena as Final Round back in Season 1.
Just before the camera focuses on Annie's spilling coffee cup in the hospital waiting room, the PA announces "Dr Corea to O.R." (Nicholas Corea was a producer on the show).