Zac Efron knew High School Musical was going to be big, it just took him until the filming of one specific scene to bet on it. In a new interview with Vanity Fair , the 36-year-old actor was tasked with watching clips from his projects over the years, including one pivotal scene from the 2006 film that put him on the map. While he always had a good feeling about the movie, according to the actor, it wasn't until they filmed "Get'cha Head in the Game" that he knew it was something really special.

"Not many people know this, but High School Musical was just a made-for-TV movie and it was very small, so we had a very condensed shooting schedule and very limited rehearsal time," Efron shares. Despite having to move fast, the Family Affair star says that the cast and crew -- including director Kenny Ortega and choreographer Chucky Klapow -- were "incredibly motivated" to make it perfect. The scene features Efron’s character, Troy Bolton, busting out a move on the basketball court as he contemplates sticking with his sport or taking part in the school musical.

It also required a hefty bit of juggling (literally and figuratively) as basketballs play a key part to the choreography. "I think we might've practiced it for two days prior to doing that all in sync," Efron says of putting the musical number together. "We maybe had two three-hour rehearsals with basketballs.

After five takes, we nailed it." Efron -- who also starred in the two High School Musical sequels -- continues, "Th.