Well, I have no formal training in zoology, so cryptozoology is all good fun to me. I have formal engineering/technology training, so I feel more comfortable assessing artifacts. The Delhi Pillar is a great example of nationalists not really understanding metallurgy/chemistry. The Baghdad Battery, I think, is an example of an artifact where you need rose-tinted glasses to believe it was used for electroplating, given that we haven't found electroplated items from that era. The Saqqara bird/plane can't actually fly or glide!
I am a huge fan of a modern version of Daniken though: Graham Hancock. At times I wonder if he should change his name to Hankook, but he raises some interesting points.

I like the idea of the sphinx being 10,000 years old based on weathering patterns of the limestone.