Today I have more of a call to action than an opinion post. So, I was looking at the Power Functions part of LEGO.com and I noticed that the extension cable is in 9V format. So does this mean it can hook up to the NXT? So, since I don't personally have Power Functions, I want you guys to try it. Here is what I want you to do: take a PF motor, a PF extension cord, a RCX/NXT converter cable, and an NXT and hook it all up! Post a comment below (remember, open comments!) with your result and/or a link to a video you made of this to either prove or disprove the theory. I will post the best video on this blog! So get commenting!