The Chronicles of Narnia by C.S. Lewis
Her Majesty’s Wizard by Christopher Stasheff, and the next three
The Dragon series by Gordon Dickson
David Weber’s Oath of Swords, etc.
The Dragon series by Patricia C. Wrede
The Brother Cadfael series by Ellis Peters
Amazing Father Brown series by G.K. Chesterton
The Victorian and Edwardian mysteries by Robin Paige
Miller and Lee’s Liad Series
Anne McCaffrey’s The Rowan (others love her dragons, but these are my preference)
David Weber’s Honor Harrington
Just in case you didn’t have enough to do already.