If any of you are frustrated "air drummers", do what I did.
I bought a set of electronic drum pads, and hooked them up to a "cheap mixer" so I could also mix in a CD and plug in some phones.
So you can adjust your drum kit to play with your favorite CD drum tracks.
I can do this for hours on end. It is not as easy as "air drums" but once you get the hand foot (yes there are kick drum and highhat pedals) coordination, and the riffs, it is a blast.