What are some alternatives?
When comparing SingStar Dance and DJ Hero, you can also consider the following products
Rock Band - Rock Band is a Rhythm Music and Single and Multiplayer video game created by Harmonix and published by MTV Games.
Rocksmith - Rocksmith builds off of the fundamentals of music games like Rock Band and Guitar Hero by offering fundamental lessons in actually playing guitar.
PaRappa the Rapper 2 - PaRappa the Rapper 2 is Music, Rhythm, Single and Multiplayer video game developed by NanaOn-Sha and published by Sony Computer Entertainment.
Performous - Performous is a Music and Dancing Simulation released by Loud Arts.
World in Audition - World in Audition is an Addictive, Dancing and Music Simulation.
StepMania - Rhythm game for Windows, Mac, and Linux.