I just finished watching an hour-long lecture entitled "A Universe From Nothing" by Lawrence Krauss:
(Sorry, couldn't embed the video, but here's the link.)http://www.youtube.com/watch?v=7ImvlS8PLIo&feature=player_embedded
Anyway, He mentions in it something that is mentioned actually rather often by scientists of note including Carl Sagan and Neil Degrasse Tyson, which is that we are all made of stardust. Quite simply the atoms that make up our bodies would not exist if it weren't for the action and deaths of many millions of stars in the early universe.
Which made me think that the next time you hear some proselytizer spouting off about how "God so loved the world that he gave his only son" or that "God's son died for you," perhaps a worthy atheist response would be simply, "No... millions of suns died for me to be here."