Idea #10 -

I want a virtual trainer. Enter the particulars about my nutrition/exercise goals and my vitals and it spits back an appropriate program. It could also match me with others in the area with similar profiles for encouragement.

Combined with a sensor like FitBit, this could be some serious firepower in our personal fitness arsenal.

Some applications that are almost there: Gyminee, ISFOnline, Traineo

(credit) (More Ideas)