Mythbusters – Christmas Special is released as S06E21, but indeed it is a re-release of an old 2004 Christmas Episode. The Season already ended, so ther eis no S06E21?
Christmas Special Gnarly fake?
In this episode, Adam and Jamie test holiday-related myths while revealing the top ten myths as voted upon by fans of the series. The top ten were:
1. Tree Cannon (Season 1, episode 6)
2. Rocket Car (Pilot 1)
3. Escape from Alcatraz (Season 1, episode 8)
4. Stinky Car (Season 1, episode 7)
5. Barrel of Bricks (Season 1, episode 3)
6. Lawn Chair Larry (Pilot 3)
7. Pop Rocks and Soda (Pilot 1)
8. Beat the Breath Test (Season 1, episode 6)
9. Chicken Gun (Season 1, episode 9)
10. CD-ROM Shattering (Season 1, episode 2)