Video....and live audio (which could have only been picked up from signals originating from the moon), and tracking data, and the fact the Saturn Vs took off with the payload needed to do the mission, and moon rocks, and thousands of photos and videos, and millions of engineers involved in every single detail of the project from hardware to developing the (primitive) software that got them there, plus photos of all the landing sites taking last year etc etc etc etc
There is a difference between keeping an open mind and being an idiot.
Open mind: 99.99% of the evidence points to the conclusion that we have gone to the moon however there is a very very slim chance that we didnt't. In the absence of further conclusive evidence showing that we did NOT go overweighing the mass of conclusive evidence saying that we did, I will conclude that we HAVE gone to the moon
Idiot: 99.99% of the evidence points to the conclusion that we went to the moon except for some 'questions' of which 90% have been explained/debunked...therefore we didn't go to the moon!.....errr, what?