Riders of Rohan (Lord of the Rings)

"They are proud and willful, but they are true-hearted, generous in thought and deed; bold but not cruel; wise but unlearned, writing no books but singing many songs, after the manner of the children of Men before the Dark Years."
                                                                                                                                                             –Aragorn, The Two Towers

Famous Horseman who lived on the rolling plains between the Misty Mountains and the White Mountains. Thye valued horsemanship and lived in many villages, rather than cities. They seem to be loosely based on the old Anglo-Saxons of Britain. They are famous for their devastating cavalry charges.

In the movies, these guys were awesome, especially in The Return of the King: