Two of my favourite heathens: Ebonmuse and Greta Christina recently answered what were assumed (before they were read) to be atheist-stumping questions, assembled by some bloke called Lee Strobel.
The questions, summarised, were of this calibre:
(1) Assuming that events of Jesus' life are accepted historical facts, please provide a naturalistic explanation of the events following the crucifixion.
(2) The universe is remarkably fine-tuned for life, doesn't this suggest involvement by a higher entity?
(3) Explain how something can come from nothing.
(4) Do you ever doubt your atheism?
(5) Can we trust our minds to be relaying to us an accurate picture of the universe?
Both Greta's and Ebonmuses's responses, while more or less echoing my own thoughts on each topic, are of a succintness and calibre that for now escapes me