To quot Iron Maiden, in their classic 1982 Album:

Woe to You Oh Earth and Sea
for the Devil sends the beast with wrath
because he knows the time is short
Let him who hath understanding
reckon the number of the beast
for it is a human number
its number is six hundred and sixty six.

That’s a pretty rocking start for the number 6 I think you’ll agree.

Eddie, the quintessential masscot of one Britian's greatest heavy metal bands.

Buddhism
The six means of perfection or transcendent Virtues of the Buddhist: the patience, the charity, the energy, the wisdom or the science, the contemplation or the charity, the virtue or the purity.

Road Trips
It conjoins with itself to make a double 66 that is awesomely historical in middle America. Class road trip stuff.

Routte 66

The Number 6 as a Google search

The sexy number six:

Smokin’ Hot ‘Number Six’ Tricia Helfer to speak at NVISION 08

Tricia Selfer. Smoking hot at number six on some site or another

• Prime Factors of 6=2×3.
• 6 is a Perfect Number.
• 6 is a Centered Pentagonal Number.
• 6 is a Triangular Number.
• 6 is a Hexagonal Number.
• 6 is a Schröder Number.
• 6 is an Octahedral Number.
• 6 is a Pentagonal Pyramidal Number.