Most Common Password : Gawker was hacked and the hacker exposed usernames and passwords stored in the Gawker Media user database. The most common password are really easy like 123456 and password. Here are top 13 from WJS:

1. 123456
2. password
3. 12345678
4. lifehack
5. qwerty
6. abc123
7. 111111
8. monkey
9. consumer
10. 12345
11. 0
12. letmein
13. trustno1

Source:  http://atmo-journey.blogspot.com/2010/12/most-common-password.html