Reading Mark Beaumont at the moment. Was interesting reading Friend's book and comparing his trip with mine (and seeing some of the same people!) but I found him a little irritating.
Mustoe's books are inspiring, for an old git like me, but I have loads of cycling books.I tend to prefer ones that cover places have been to, for that extra bit of interest, but I still have loads from the US and Africa, for example.
Middle Aged Moutaineer, by Jim Curran, IIRC, is a good one.