Just a Matter of Time - S5-E13
Other mistake: In reality, Steve would radio in from the capsule as soon as he woke up on Earth, but strangely failed to do so until later in the episode.
Backlash of the Hunter - S1-E1
Other mistake: Jerry Grimes follows Rockford to the theater, sits at the bar, orders bourbon and water and waits for Jim to come out of the bathroom. Jim meanwhile set up a trap for him, which somehow does not affect anyone else, and Jerry ends up getting roughed up. He then drives off to this other joint, where he sits at the bar...which happens to be the exact same bar with the exact same posters as the other one.