I thought it may have been an accident and she tripped on a wire or something!

Definitely.  The line that was used to close the door from off camera also caused Amy to trip in an earlier ep.  You'd think they would have learned to warn the actors about the hazard.

Gosh, we were stupid back then.  Roger not only kept a loaded gun in an easily accessible place in the house where his son lived, he also took it out in full view of a visiting child.

Willie Loomis, please see reply #9.

He was in "Back There," one of theTZ eps that focused on time travel, and on what you can or can't change about past events.  The time traveler is played by Russell Johnson, and Lasell's character is eventually revealed to be [spoiler]John Wilkes Booth.[/spoiler]

Lasell was to attend a Twilight Zone reunion in 2002-- one that was put together by the group that does the Hollywood Collectors Shows-- but unfortunately he had to cancel.

It definitely isn't my favorite, so if that was indeed a factor in popularizing this popular concept, I think that's regrettable.

I thought Elizabeth treated Victoria more as if she might know something about who she really is but not as her own secret daughter.  Having looked closely at the evidence at one time, I don't think this was the writers' original intent.  At least, a strong case (in my view, a stronger case) can be made in support of other possibilities.   In particular, I think DS writer Francis Swann had a completely different take on the situation based on his early scripts.  But he left the show and the mystery was eventually allowed to fade into the carpet.

Philippe summed up my feelings EXACTLY.  One scene that helped convince me that Liz is not Vicki's mother is when Liz [spoiler]forces herself to leave Collinwood, defeating her own fears for Carolyn's sake.  It's Vicki that suggested she handle getting Carolyn released, telling her she must demonstrate her love for daughter by showing up at the jail, and Liz's mind seemed to remain fixed on Carolyn's and her own situation.  Once Liz convinced herself that she must screw up her courage and leave the house in order to help the deeply troubled Carolyn, her exit played out like a slow march to the gallows.[/spoiler]  We never saw Liz make a sacrifice approaching anything like this for Vicki, and there was no acknowledgment in this scene by Liz that she might actually have more than one daughter.

Did that Tarot card say LAX?  If so, does that meant that Roger will be going to Los Angeles instead of London?

LOL.  Right side up, it says XVI since The Tower is card 16 of the Major Arcana.