Thisxkcd strip features a guy who dreams up elaborate scenarios that fit this trope whenever he learns a new skill. In this case specifically, he dramatically saves the day with his knowledge of regular expressions.
John meeting his denizen, overcoming his personal trials and mastering his powers, and playing a gigantic pipe organ that causes all of LOWAS and beyond to be covered in strong gusts of wind. All to blow dust out of Caliborn's Homestuck cartridge.
Apollo Vindread (The protagonist's Father) Is a Wine brewer of almost every kind of Grape known for wine. Sousuke Nitroyuu once came to his Vineyard to taste his wine, if he liked it, he would buy 20 crates of each wine! Apollo Decanted the Winewith an Aura to make it taste so good that Sousuke bought all the wine he could.
Subsequently, when shut-in Marigold has some trouble bringing herself to open the door of a bar where she has agreed to meet the gang.
The Word Weary: In this comic, Lillith suggests a cool boss fight for John's D&D game- namely making the other characters fight Rasputin, who happens riding the Tsar of Russia (the Tsar is a white dragon.)
At the end of the year-long Penny and Aggie arc "The Popsicle War," the title characters and their friends celebrate their social neutralization of the bully ringleader Karen withfireworks, a custom normally reserved for national holidays of independence.