(Image via Filmonista)

No, it’s not the fact that one can now stream the entire series on Netflix, although that is decidedly good news. It’s that today marks the 21st anniversary of the airing of the second episode of “Twin Peaks,” the one featuring the famous dream sequence that introduced America to such catch phrases as “That gum you like is going to come back in style” and “I feel like I know her, but sometimes my arms bend back.”

That episode, titled “Zen, or the Skill to Catch a Killer,” first aired April 19, 1990, and remains the best in the series, the one that turned “Twin Peaks” into a water-cooler phenomenon, paved the way for a slew of merchandise tie-ins and would eventually be cited as one of the reasons that later, ground-breaking series such as “The Sopranos” and “Lost” could feel comfortable taking risks with their audience. I’m also fairly sure that the saying “WTF?” was invented as a result of this scene.

Enjoy the sequence, which I ranked at No. 1 on my list of freakiest “Peaks” moments, after the jump. Then start watching “Twin Peaks” on Netflix or in some format, ASAP. Even two decades later, much of this material remains shockingly bizarre by typical TV standards — and I mean that in the best way possible.