Nothing fancy: Just sword-and-soccery and sex-and-drink and rock and roll and hell-fighting before it became popular.
Beat me to it. Well said.
The Door Into Summer by Heinlein
Time And Again by Jack Finney..
matter of fact, anything by Jack Finney (who made his mark with “The Body Snatchers”...)
Allen Appel also has a good series about a time traveler..
http://www.amazon.com/Allen-Appel/e/B001H6W7XE