Elizabeth Berkley revisits the infamous caffeine pill episode of 'Saved by the Bell'

"I'm so excited!" For 'Saved by the Bell' fans, that phrase is tied to one of the most iconic, and enduring, episodes of the hit show.

Elizabeth Berkley, who played Jessie Spano during the original run and returns for the forthcoming reboot, spoke to Yahoo Entertainment about the infamous episode, "Jessie's Song," where her character gets hooked on caffeine pills.

"Jessie was unhinged," she said. "And for a perfectionist ... that moment was a moment where she broke. And I think a lot of people, for some reason, it resonated for them."

She said of the highly memeable line, "there's not a day that goes by that someone doesn't either come up to me or DM me ... 'I'm so excited.'"

Video Transcript

- (SINGING) I'm so excited! I'm so excited! I'm so scared.

ELIZABETH BERKLEY: Doing that episode of "I'm so excited" was-- it was juicy. Mark-Paul and I had a lot of training prior to doing the show. Mark-Paul and I, though, had a really beautiful friendship and we still do-- like a brother, and that trust-- we were really devoted to the craft of acting too.

And so sometimes on a sitcom especially-- the original one was so earnest and light-- we were really excited any opportunity where we got to kind of flex our acting muscles a little more. And that one-- that one, we-- we went for it.

- Pills. You mean you really are taking drugs?

- I need them.

ELIZABETH BERKLEY: Jessie was unhinged. And for a perfectionist and for a girl that wanted to maintain-- whether it was the illusion of having it all down, or truly having it all down-- that moment was a moment where she broke. And I think a lot of people, for some reason, it resonated for them. And I think as kids it upset them to see this character. And maybe they saw a piece of themselves in it.

- 1, 2, 3, Hot Sundae!

- (YELLING) Yeah! We'll be great! We'll be awesome! We'll knock 'em dead, right? Right?

ELIZABETH BERKLEY: I know that there have been academics who've written papers about this episode, which makes me laugh. But it has had an impact in pop culture-- as has the whole show, of course-- which is a legacy that we don't take for granted and never did.

- (SINGING) I feel so good whenever you are near. You make my troubles seem to disappear.

ELIZABETH BERKLEY: I mean, if you're going to do a song like that jumping on a rebounder mini trampoline, you have to go for it when you're taking caffeine pills. There's not a day that goes by that someone doesn't either come up to me or DM me or something-- "I'm so excited."

- (SINGING) Oh!

ELIZABETH BERKLEY: There was no holding back. Just like the song. (SINGING) Put your mind to it, go for it. Get down and break a sweat.

- (SINGING) Rock and roll, you ain't seen nothing yet. Mind to it, go for it. Get down and break a sweat.