I liked this article

http://adderabbi.blogspot.com/2008/04/adderabbis-pesach-faq.html
particularly this part:
"The mitzvah of sippur yetziat Mitzrayim is to narrate our founding story to our children (and ourselves) in a manner appropriate to each of them. The main text used should be the vidui bikkurim in Devarim. Make sure that you tell it over in a narrative format (beginning, middle, end, starting with the bad parts, ending with the redemption), and use the objects on the table (matzah and marror, not the ‘Bag O’ Plagues’) to characterize and punctuate the various parts of the narrative. That’s the mitzvah. The rest is, quite literally, commentary."