I switched to the following for this week's commute:

Supertramp "Breakfast in America"
Basia "Time and Tide"
Patricia Kaas "Tour de Charme"
Yamashita Tatsuro "Cozy"

Assorted mp3s on SD card:
Lisa Ono, Astrud Gilberto, Babalu, German Bense, mostly bossanova

I've also been listening to the Mercedes Benz Mixed Tapes collections which lend lots of variety.