One early script idea featured a flashback revealing the character of Sam Anders, who does not appear in the finished film, as a professional Pyramid player. This was later omitted due to budget and time constraints. See more
In both versions, but especially in the unedited one, Starbuck's wing tattoo is visible. According to chronology she should not have it until New Caprica - about the time of her marriage. See more
As my own existence comes to a close, only to begin anew in ways uncertain.
All this has happened before and will happen again. Again, again, again, again, again, again, again, again, again.