I enjoy reading how the people lived - what they wore; what they ate; how religion intersected with their lives. Also I'm interested in the legal systems of both Saxon and later Norman, and the Danelaw. Celtic mythology. Monks and monasteries. Everything thing to do with the Dark Ages through to the Middle Ages, really. I'm not participating in RPGs, or writing about the period - it's more of a general interest, and something I enjoy reading about.