Alphanumeric Characters

WindUpBird

abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890

lackofcheese

Unicode characters

Jason

Unicode characters

Unicron character.

chaosof99

Wasn't this joke already played out enough?

Walker

Unicode characters

Unicron character.

Omicron character.

Jason

Omicron Persei 8 character.

Double Z

Joe Pesci character

GreatTeacherMacRoss

Omniscient character.

Churba

Omnipresent character.

Li_Akahi

Rym

I was always a fan of the § character.

╨, ╤, ░, ▐, ₧, ◘, and ♪ are all fine and dandy, but § used to be in most of my passwords.

WindUpBird

╤_╤

Manly tears.

YoshoKatana

I was always a fan of the § character.

I call that a Simoleon.

EDIT: And apparently everyone else does, too.

Aria

I was always a fan of the § character.
╨, ╤, ░, ▐, ₧, ◘, and ♪ are all fine and dandy, but § used to be in most of my passwords.

fl is a nice character too. Useful for imitating others users names.