If you're living in Japan you will have seen Jay Kay on the television commercial for Sony MiniDisc's. The advert has been airing since at least early June. Jay apparently looks pretty awesome in it and from a comment on the Jamline mailing list, Jay is hopping and saying "whieeeeee!!".
Jamiroquai appeared live as part of the season premiere of US television show Saturday Night Live today in 1997. The band performed the single Alright.