: " The Earth Explodes?! A Decisive Kamehameha! "—Vegeta fights Golden Frieza, and Whis uses a "Temporal Do-Over" to save Earth.
: To stop the rampaging Great Ape without killing Goku, Jackie Chun powers up to his MAX Power form and fires a massive Kamehameha . Dragon Ball (Dub) Episode 27
: Roshi enters the tournament specifically to ensure his students don't become overconfident, teaching them there is always someone stronger to strive against. : " The Earth Explodes
If you were looking for episode 27 of a different series, here is a quick reference: Dragon Ball (Dub) Episode 27
: " The Return of Goku "—Goku finally arrives back on Earth to face Nappa and Vegeta.