Still, sometimes he made quite big decisions where I wonder what the person he leaped into thought about them once they returned to their own life.
I often wondered that myself, but it was one of many bits of fridge logic the show avoided addressing. Logic or science were never priorities for QL's makers; they were doing an intimate character drama and a historical fiction pseudo-anthology, and the mechanics of the leaping were just a set of handwaves to make that happen.
I always kind of handwaved it with the idea that Sam somehow leaves remnants of memory behind, which the Leapee perceived as their own. (Just as Sam sometimes psycho-synergized with them.) It's thin, but good enough for me.
There was one episode where we saw the "Leapee" in the waiting room in the future, right? Didn't Al talk to him and tell him what Sam was doing? Or again, I'm probably thinking of the McConnell novels, which went into much greater depth about what went on back at Project QL. I think maybe part of the deal was that they offered counseling to the person in the waiting room so they'd be on the right track after Sam fixed their life.
I think the Lee Harvey Oswald episodes were among the bigger historical ones they did on the show.
That 2-parter was a deliberate exception to the usual avoidance of the cliche of time traveling to big historical events. It was a response to Oliver Stone's movie
JFK, which advanced a conspiracy theory about the Kennedy assassination despite the fact that the theory was based on a document that had been exposed as a hoax decades before. QL's creator Donald P. Bellisario had been briefly acquainted with Lee Harvey Oswald in his youth, and he was confident that the conspiracy theories were BS and Oswald had acted alone. So he wrote an episode about Sam leaping into Oswald at various points in his life in order to present a counterargument to Stone's movie. There's even a dramatization in the episode of Oswald and Bellisario's meeting, IIRC.
We almost never saw the Leapee post Leap.
Right. QL was an anthology-esque show, and it was in a time when it was still sometimes common to rearrange the broadcast order of episodes arbitrarily. So the format was to end one story by having Sam Leap out and the screen fade to blue, then cut to a clip from the beginning of the next episode where the blue fades out and Sam finds himself in a new body. That way, they could cut to a teaser clip of any given episode based on the selected airing order. It was basically the same format used by
The Time Tunnel, except that TTT had a commercial break between the end of one story and the teaser clip from the next, while QL used the blue-light fade-out/fade-in to make it look like a direct transition.
It occurred to me once that QL has basically the same premise as
The Time Tunnel -- scientist threatened with loss of funding jumps prematurely into experimental time machine in near future, gets trapped jumping around in the past from week to week, and has only one companion on his journey. Of course, there were plenty of differences in execution, like TTT having two physical travelers and routinely cutting back to the time-travel complex in the near future. But the main difference, besides QL's "leaping into bodies" conceit, was its avoidance of the "big events from the history books" focus that was TTT's bread and butter. (Or rather, TTT's bread and butter was "big events from historical movies that we can crib stock footage from.")