Sadly, though the opportunity for real-time griefing presents itself rather clearly here, developer Harmonix chose not to allow song-swapping or difficulty changes mid-song.

ENGADGET: Hands-on with the first SmartGlass app, Dance Central 3's Party Time DJ

Hopefully that doesn't lead to any unintentional interhousehold griefing as users manage the often inadequate hard drive space in their cable DVR, but it can certainly put ones mind at rest to know The League (or whatever your show of choice might be) was successfully archived.

ENGADGET: Comcast quietly updates DVRs with ability to list stored programs from the web, mobile apps