Two undeniable ones for Micki occur in "Dr. Jack" where she electrocutes the villain with a defibrillator and "Bedazzled" where she uses a mirror to reflect the burning light of the lantern back at its owner. She's overall clever and resourceful throughout the latter unusual Hostage Situation episode, whether in feigning ignorance, stalling for time while looking for the entrance to the vault (twice!), lying in wait to hit the villain over the head as soon as he opened the vault again, arranging to shock the villain by wrapping exposed lamp wires around the lantern, and having Richie throw it over the railing to make the villain fall.
Ryan's would have to be: using the jumper cables to ground the villain's charge in "The Electrocutioner" so he electrocuted himself through the radiator pipes; knocking Reverend Josiah out the window by letting go of the Quilt of Hathor; tricking the villain of "Tails I Live, Heads You Die" into bringing Micki Back from the Dead; getting the cursed pocket watch away from Reatha right as the clock reached one; and strangling the werewolf with silver-nitrate-coated movie film.
As for Jack: tricking Lady Di out of the cup in "A Cup of Time"; going apeshit on the villain of "Brain Drain" after he used the trephanator on his Old Flame; refusing Uncle Lewis's Final Temptation in "Bottle of Dreams" so as to save Micki and Ryan; and setting up a small weapons arsenal to use against "The Butcher", then taking him out with his own barbed wire after removing the Thule Amulet (after he had taken out all of Jack's Band of Brothers).
The compact changing its powers seems to make no sense at first, until one considers what happened in the episode it first appeared in—not only did its owner end up killing herself once she achieved the love she wanted (but which she knew was only compelled and thus not truly hers), but she herself was a lonely and rejected girl whom everyone in her school believed unattractive. Killing herself after achieving her "love" instead of killing the man in question would break the love compulsion curse, and at the same time the death of an "ugly" tragic girl would cast a new curse related to giving beauty and the chance to have a life others would envy.
At first the name given to the "Quilt of Hathor" is rather inexplicable, since an item marked with a Satanic pentacle and used to frighten people to death seems to have nothing to do with either the Egyptian pantheon or specifically a deity of goodness, love, motherhood, and community. (Although in and of itself a quilt would fit those last two.) But the main villain of the episode tends to use the quilt to kill people while envisioning herself as a sensuous, lusty woman at parties and dances, something which Hathor does hold sway over...and Hathor is also a goddess of fate who was believed to inspire people through divinatory dreams.
Why did the victims in "Symphony in B#" just stand there and wait to get stabbed? Look at their faces when Korda "plays" the violin. Of course a secondary ability of the violin would be to hypnotize its victims — it'd help greatly in its ability to kill.
The rather horrific statements of racism, classism, and moral/national superiority made by the Nazi commandant in "The Butcher" (who has posed as a radio talk show host), and the way he has so many callers enthusiastically agreeing with his demands for deportation, ethnic cleansing/genocide, and restoring America to greatness, are...extremely similar to a certain Presidential candidate and his supporters. Let's leave it at that.
"Mesmer's Bauble", wherein the pop star the episode revolves around dies by being melted into the villain, is hard enough to watch after learning her actress, the real-life singer Vanity, nearly died from renal failure due to drug overdosing and thus dropped out of show business. (In the episode her character loses her manager and lover, and nearly breaks down saying she can't go on...) It gets worse learning she died in 2016, right before her ex-partner and music mentor, Prince, died as well (eerily, at the same age). To cap it off, her character also sings a cover of "Nature Boy" in the episode—a song quite fitting for a story about a fan with unrequited love, but which was also used in Moulin Rouge!, wherein the singer character also died onstage.
Also, the death of Ryan's father in his son's place, and Mrs. Kent becoming the seventh victim to heal her baby with the cursed cradle. Becomes Tears of Joy when we see the baby lived and will be raised by the babysitter who loved her.
William Pratt, aka Jeff Amory, his mind snapped, crying in Micki's arms after she tells him she still loves him, thinking she is the woman he loved and killed. It's also an in-universe example for Micki herself.
Mrs. Wren, being forced to kill both her husband and son to save them from the "Mephisto's Ring."
Johnny being forced to kill his resurrected father at the end of "Bad Penny" after finally realizing that it was wrong and selfish of him to bring his dad back from the grave without his own consent. At the very least, Johnny and his dad are able to finally make peace with one another before Johnny has to kill him with the episode's titular cursed artifact and that Johnny himself ends up crying emotionally as he holds his dad's body in his arms while Jack and Micki look on from the background.