@woozle
I had no idea you could actually play like that. My back protests a little just thinking about it.
Van Halen's "Jump" sold me on synths, but I always wanted my own real piano. First I got a Yamaha PSR, then a dedicated MIDI hardware module with higher quality, and finally a full weighted keyboard. It took me a long time to realize that a lot of the "piano" sound I wanted was really reverb. Nowadays decent VST pianos are so cheap that I got two for free with my new keyboard.