I'm surprised that nobody is mentioned Touch My Body among their favorites! It's definitely one of the highlights of this album for me, simple because it's a bit different for Mariah, yet she makes it her own, and it's fun and fresh!
I think this album is full of gems that I appreciate very much, and definitely happy that we got them - from Side Effects, to Migrate, to For The Record, I'll Be Lovin U Long Time, and on. And even the ones that I like less, they each have something cool and interesting in them.