Here's an 84 minute long video of a debate between Michael Shermer and Dinesh D'Souza on some religious topics.
I won't say much because I'm fucking biased and it won't get me anywhere arguing something which has no definite answer. Plus, I don't give a shit about changing people's minds.
You could use this to reinforce your current beliefs or just laugh at how stupid the other guy is because of his lame arguments. Either way, it's entertainment.