http://www.amazon.com/Classics-Political-Theory-Michael-Morgan/dp/0872207765/ref=sr_1_1?ie=UTF8&s=books&qid=1241078657&sr=8-1

blackwell publishing is another good source for philosophical anthologies:

http://www.amazon.com/Blackwell-Ethical-Theory-Philosophy-Guides/dp/063120119X/ref=sr_1_2?ie=UTF8&s=books&qid=1241078777&sr=1-2

http://www.amazon.com/Companion-Ethics-Blackwell-Companions-Philosophy/dp/0631187855/ref=sr_1_3?ie=UTF8&s=books&qid=1241078777&sr=1-3

for other good sources on ethics, consider exploring aristotle’s "nicomachean ethics" and kant’s "grounding for the metaphysics of morals". ayn rand has written and inspired many pieces on objectivist ethics, google her and read some of her stuff
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the gods deal with lust and sex and violence and anger which are all of questionable ethical-ness.

and same with shakespeare stuff.

and the bible, at least the old testament. with that you could talk about how ethics have changed. some of the first stories are about super corrupt things, like women being mistreated. but it wasnt considered unethical back when it was written since women had such a low stature
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