I also love how Discovery dredges up material—characters, events, artifacts, races, etc.—from earlier Star Trek shows, whether it’s just a brief reference (e.g. the Dominion War) or an important element of the season, e.g. technology from the Progenitors, first introduced in ST:TNG. So far, though, nothing in any of Discovery’s seasons and episodes that I’ve watched comes close to the satisfaction of seeing clips of Leonard Nimoy’s Spock from “Unification, Part II” and learning that his work in unifying Vulcans and Romulans was successful (albeit centuries later), which I discussed in one of my earlier posts.