Evolution is not controversial, not among scientists.
Therefore any attempt to answer this question is invariably going to veer off topic to things like "Any real evidence for evolution" which I have pointed out elsewhere is also a piss poor question because the answer is, that in order to be a valid scientific theory one considers all of the evidence. If the theory is the best explanation for the data, it is a valid scientific theory and that fact will not be controversial. That doesn't mean there aren't controversies about specifics - for example, what individual fossils tell us, etc. - lots of controversy about that.