One of the best explanations of the evidence for evolution is Jerry Coyne's Why Evolution is True. Those who are looking for an accessible, informed [1] coverage of the evidence for evolution would be hard-pressed to find a better book.
For those wanting an overview of Coyne's treatment, this video presentation by Coyne covers the major lines of evidence:
If you're after the evidence for evolution from the fossil record, then the respected vertebrate palaeontologist Donald Prothero - author of the excellent Evolution: What the Fossils Say and Why It Matters - likewise provides an excellent coverage of the evidence in this 90 minute presentation:
The evidence for common descent from the genomic data is covered brilliantly by cell biologist and cancer researcher Graeme Finlay in his recent book Human Evolution: Genes, Genealogies and Phylogenies. Those seeking an overview of Finlay's argument could do worse than look at his 2006 lecture Human Genetics and the Image of God delivered at Queen's Lecture Theatre, Emmanuel College, Cambridge. [2]
References
[1]. Coyne is an evolutionary biologist whose professional specialty is evolutionary genetics and speciation. Quite literally, he wrote the book on the latter subject (along with H Allen Orr).
[2]. The lecture website is here
[2]. The lecture website is here
