20/20 Experience is a fine album that mixes several genres very well - Pop, R&B/Soul, and even Latin. My biggest surprise was Let the Groove Get In. I was not expecting to like that song but I love it and listen to it all the time when I go to the gym. Pusher Love Girl and That Girl are also good R&B/Soul tracks. Love the songs you already named Notorious. JT & Timbaland did great on the production.
Spoiler for Santa Claus, Go Straight To The Ghetto: