yup,have just listen to their lastest single "ORDER MADE",well,their music is quite strange,the single is funny especially the song called Guu no Oto, it sounds a liltte bit like Jason Mraz but much more stronger and faster :).I like it.anyway,the vocalist sings english quite clearly XD.
[single] RADWIMPS - ORDER MADE

tracklist:
01.ORDER MADE
02.Guu no Oto
DOWNLOAD OVER HERE

and lyrics for those cute songs:
 


and Guu no Oto ~the english one :D.

( it's freakin' crazy XD )