[The Dragon And The George][1] by [Gordon R.Dickson][2]. "One minute he was a college teacher, the next he was a dragon! Jim Eckert leads a peaceful, happy campus life. He's a college basketball player and an expert in medieval history. 

But his life has been disrupted by the disappearance of his girlfriend Angie. While taking part in a laboratory experiment on astral projection she just vanished. 

In an attempt to find out what's happened he submits himself to the equipment. A very unwise move Next thing he knows he's in the Middle Ages. Worse, he's no longer human. He's in the body of a dragon. Worse still, Angie has been nabbed by another dragon and taken to the Loathly Tower. Obviously, Jim has no option but to give chase . . . 

*(This first volume in Gordon R. Dickson's hilarious fantasy series is perfect for fans of Piers Anthony and Terry Pratchett.)*


  [1]: http://www.goodreads.com/book/show/114936.The_Dragon_and_the_George
  [2]: http://en.wikipedia.org/wiki/Gordon_R._Dickson