VNC is a standard used in the management information systems / IT world for years. On multiple platforms.
if this app evolves, i can set up many things away from the office, home, school (all of which run VNC servers)
for the home user (except for uber geeks like myself) your not going to find yourself controlling iTunes, or running bat files or apple scripts etc on VNC, So there is little reason for a person to use VNC to control devices, media players, scripts etc.
(edit) I guess what i failed to state is, VNC has become a standard (of many) (and a fairly inexpensive one) for remote access for multiple platforms, specifically connected to each other across platforms.
Telekenesis is cool, but my home workstation is NOT a mac (i should note though i strictly sync my iphone with my Macbook).
(another edit) I should i also note, this app doesn't work yet for me (LMAO, i know, hypocritical) just with my setup due to my 2 monitors and very large resolution and most likely other things i am just too lazy to figure out, fact is it doesn't work for me, and hopefully this will evolve. and thats the straight talk....
see:
http://en.wikipedia.org/wiki/Vnc