I'd be here for a single during the X Factor, to promote either Femme Fatale or the Best Of compilation, though for the latter nothing would really fit on radio well. In fact, I just used the cover and made my own tracklist by rearranging things on iTunes.
Maybe "How I Roll" or "Inside Out" if they promote FF. The only thing I could see for the Best Of would be "Cinderella".
Blackout 2.0? I don't trust Wikipedia, but you never know. 
