I also remember "Ladyhawke". Fun movie with a few big flaws. Biggest of which was woefully miscasting Leo McKern and second biggest of which was casting Matthew Broderick (I think?) at all. But Rutger Hauer did a good job and the basic plot was decent enough as a movie plot.

Picked up the novelisation not all that long ago (mainly because Joan Vinge wrote it) but haven't got around to reading it yet. (I think it was anyway... can't find the book to double check but vaguely remember that was the case).