1) Misunderstanding the burden of proof and assuming that God is unfalsifiable and therefore true.
2) The mentioned idiocy about 'if we evolved from apes why are apes still around? eh?'
3) 'Well x friend knew y person who had never walked for years and then in his church he stood and walked for the first time!!!'
4) Repeatedly making references to 'evolutionists' and hinting at a grand conspiracy of 'evolutionists'.
5) Taking books on 'creation science' seriously and expecting me to check through the wild 'facts' therein. (I came across one which tried to prove the Earth was young by making references to 'high levels of Th230 and U236 on the moon; both short-lived elements'.)
6) Gesturing wildly at statistical blips and ignoring the actual trend. (See 'person walked in church after being crippled for years' or 'some guy I knew recovered from an illness when we prayed for him'.)
7) 'If there are an infinite amount of universes then an omnipotent being must exist in one of them and if he does then by definition he exists in all of them!' (Those of a Spacebattles descent will recognise this particular piece of highly creative idiocy.)

9) Resorting to assumptions of superior morality.
10) Accusing Atheists of Communist tendencies.
11) Claiming that Atheism caused more evil than any other belief system and pointing to Soviet Russia, China and (laughably) NAZI germany.