Macrobiotics is a grain based diet so any books on Macrobiotic cooking will include lots grain recipes.
I love sushi and I eat it at least twice a week. Some sushi restaurants are now begining to offer brown rice. If your favorite sushi restaurant doesn't offer brown rice sugest that they might expand their client based by offering it and that way the would also attract the more health concious crowd. If enough folks ask they'll start offering it.
Both the WHole Foods in my city offer brown rice sushi rolls and I bet if I'm there while the guy is making the sushi that they would make up whatever I asked for with brown rice.