I'm pretty sure Ken Hirai covered Automatic, and there was some Reggae group that also covered it some time ago in English. As mentioned above, Namie Amuro sang Kettobase! at a live show once. Jolin Tsai covered First Love. Ailyn did a cover of Hikari in Spanish while she was in the girl group Charm, and then she covered Passion in Spanish as a solo artist. Juju sang First Love on her cover album last year.

I know there are more, but these are just the ones I can think of off the top of my head.