That's what I noticed about her on the show last night. She said she also has a background in Jazz which is impressive. She sang with Tony Bennett last night too and she came off as very elegant. I just saw a different side of her than what I was shown previously.
I still like "Poker Face" and "Just Dance." I, too, was surprised she sang so well w/Tony Bennett. I think she will be around for awhile because she's very smart at connecting with her fans.
I think she's "borrowing" more from Bjork then Madonna, imo.