I follow Sumo each basho. Makushita, Juryo and Makuuchi divisions. Very easy to get caught up in the sport and the Japanese culture.
Favorite rikishi: Akiseyama, Enho, Midorifuji, Ura, Horshoru, Tobizaru, Daiesho, WMH, Asanoyama.
The athleticism and flexibility for MOST of these rikishi is amazing.
Agreed upon NattoSumo for your viewing. Excellent info for each wrestler, heya, records, etc.