During the Credits (spoilers)
As A Knight’s Tale ends, the camera focuses on a constellation of stars in sky. The constellation is Orion, known as the Hunter which is what Jocelyn refers to William as before she discovers his true name.
After the Credits (spoilers)
Roland, Wat, Kate and Geoffrey are shown drinking and trying to see who has the loudest farts. Wat ends up having the weakest and Kate proves that she has the loudest.