Niconico (a type of television broadcasting website) is planning to show Japanese mahjong in the great English language today (April 18th). Although it will be available after that date with “timeshift”.
You can access it at this link:
Please show your support by joining in the community so that the powers-that-be know that the English-speaking mahjong market is there and growing.
A thank you to @Osamuuuu for alerting me to it.
(On a totally unrelated note, if you like niconico and speak some Japanese, Jenn, Garthe and Shinya’s show is definitely worth a watch. I’m helping out with it at the moment and they’re really funny. I’m not funny but I push buttons so that’s okay. http://com.nicovideo.jp/community/co1801524)