Cibo Matto; I discovered them from watching some tv show on comedy central back in 97, 'Viva Variety' I believe. They were performing the song 'Birthday Cake' from their album 'Viva! La Woman'. Cute girls singing barely coherent lyrics about a birthday was just so kooky that it stuck with me. I noticed that all of the song titles on their first album referred to food. I didn't realize until recently that 'Cibo Matto' means 'crazy food' in Italian. Very fun.
Their second album, 'Stereo * Type A' is a bit less food based and a bit more trippy in parts. 'SciFi Wasabi' is awesome as is 'Sunday Part I'.
I found the video of the live performance I saw back in 97. Have a watch: