someone explain the big O to me

[el guapo]

so far i've seen almost all the episodes since they started airing on Adult Swim some 2 or so years ago. i've been able to make sense of most of it (i think) but i really am clueless when it comes to the details. i saw the "last" epidsode where angel discovers that

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her memories were that of a tv program and that she is the true pilot of Big Duo, and therefore causing the loss of memory.

but the ending was waaaaaay open-ended. also i totally dont get "act 14: roger the wanderer" i have no idea how it fits in with the whole thing. If someone would liek to take the time to explain this the over-arching plot in detail, i would greatly appreciate it. thanks.

[Smileycute_Kagome]

[Dark Lilly]

Please do not give away endings or curcial plot details wouthout engaging a spoiler warning. It is up and to the right of the Message body box.

Type what you want to say, highlight it and then hit the spoiler button.

The text will appear blacked out. When someone runs their cursor over it, the text will appear.

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It is not nice to give away endings, deaths, romances and plot twists because lots of people are still discovering anime .... even stuff that has been around a while. Don't spoil the magic for someone else, please.

Thank you.