Vicki's early dealings with David stand out in my memory, as well as her first scene with Joel Crothers as Nathan in 1795.
Like Midnite, I admired her for going up to Burke's hotel room, not giving a damn that it could be giving Devlin--or others--the wrong impression. I also enjoyed some of her scenes with Burke, when he was falling in love with her and she was, unknown to herself, undermining his efforts to bring down the Collins family.
AM also had some wonderful moments with Joan Bennett (how I wished she had told her the truth about her identity when Vicki was about to be married)!
I also thoroughly enjoyed Vicki's Blue Whale scene with the nearly-dead Jason McGuire, when he hinted he knew of her origins and she accused him of trying to hurt her.
I loved Vicki as originally conceived by the DS writers, and the dumbing down wasn't her fault. I'm just sorry she never was brought back as the villain she longed to be, and think Dan Curtis missed the boat on that one.
Great question!
Love, Robin