At Summerslam 2014 she actually stepped into the ring for the first time in a decade, and put up a surprisingly athletic, well-executed match with Brie Bella. Her performance was so good, she got a rare "you still got it" chant from the crowd after being one of the most hated heels in the company for the past year. And she actually won this match, thanks to Nikki Bella selling out to the Authority and turning on Brie. Also her really cool outfit from that match, which later got auctioned off for a decent amount to go to charity.
Two moments building up to aforementioned Summerslam match are also memorably awesome: her brawl with Brie after Brie twisted her arm into agreeing to the match (among other demands), particularly her playing the Wounded Gazelle Gambit, then slapping an unsuspecting Brie hard enough to knock her off the ring apron, and snarling, "I'm gonna make you my bitch," before dropping the mic; and her attacking both Bellas at the contract signing while Triple H all-too-happily assisted, culminating in Stephanie Pedigreeing each twin.
Many of Steph's promos may count, seeing as how the woman is easily one of the best mic workers in the company. For smarks who can't standCreator's PetJohn Cena, her verbally cutting him to shreds via "The Reason You Suck" Speech on October 27, 2014's RAW stands out as a vicious, shining moment for them and for Stephanie.
Stephanie giving John Cena a vicious"The Reason You Suck" Speech on the 3/2/15 edition of WWE Raw by claiming how the WWE doesn't need Cena but Cena needs the WWE and how the WWE can survive a mania without him. And the fans loved every moment of it despite her status as the heel GM.
Despite the fact that most people have become so used to Stephanie eviscerating and emasculating performers in promos that they became desensitized to it or frustrated by it, the short speech she gave to Roman Reigns on the Raw after Battleground about how he "lost it for all of us" and how he's "not a good guy, not a bad guy, just a loser" was certainly more welcome than not, particularly because it was largely seen as true in both a kayfabe and a meta sense.