I know this video is almost two years old, but I still love it.  P!nk is the best female performer working today.  She writes her own songs, plays the occassional instrument, and doesn't need to rely on autotuning or post production effects to make her music sound unique.  With her performace of "Sober", P!nk set the performance bar to a level that makes Britney Spears, Kesha, and Beyonce look up and go, "Well crap!"