there are so many...a big one is the amazing dna code that actually has a numeric system to it and is more complex than a computer code. The functions of our eyes are more complex than a modern camera and yet are totally automated. It couldn't make itself...simply not logical or possible. It's just our dark thoughts that try and confuse us about Him.
Prove it. Things like "complex" have rigorous specifications, and you should be able to prove the relative complexity without resorting to handwaving. You've already made an assertion, apparently by reason of incredulity, so throw us some red meat.
The eye is a good example of irreducible complexity. Not even the best and most expensive cameras can focus as quickly as the human eye.