The most common that I come across include:
That's a start, I might post again if I think up some more that I commonly deal with. Then there is the whole, "no evidence for Jesus ever even existing" can of worms.
Removing for violating our rules on poll/trivia type question.
Better alternatives would be ones that would lead to specific answers rather than broader ones. An example perhaps culled from /u/talondearg's response would be:
Is there a history as to why Christians believe the deciding of the books in the bible were at the council of Nicaea?
The answer to which would involve specific examples of the evolution of Nicaea as a pivotal moment in church history, rather than the way your question is asked, to which the answers would broadly be in the form of "tell me random misconceptions about Christianity."