DC Fans Are Loving the 'Smallville' Homage in "Elseworlds"

The Arrowverse's "Elseworlds" crossover kicked off tonight, and it gave fans a pretty awesome dose of DCTV history in the process.

Spoilers for tonight's episode of The Flash, "Elseworlds Part 1", below!

The episode saw Barry Allen (Grant Gustin) and Oliver Queen (Stephen Amell) realizing that they'd switched lives and identities, thanks to a manipulation in reality by Dr. John Deegan (Jeremy Davies). Frustrated that no one on Earth-1 seemed to recognize the switch, Barry and Oliver traveled to Earth-38, in hopes that Kara Danvers (Melissa Benoist) would be able to help them out.

Barry and Oliver found Kara with Clark Kent (Tyler Hoechlin) and Lois Lane (Elizabeth Tulloch), all of whom were hanging out on the Kent Farm in Smallville. As audiences were taken to that location, they were treated to a somewhat-familiar sound -- "Somebody Save Me", the theme song from The CW's previous long-running superhero franchise, Smallville.

The moment, which was already teased by Amell earlier this month, certainly struck a cord with some DCTV viewers, many of whom felt pretty nostalgic for the old show. Here's a round-up of some of those reactions.