What if, we could have a machine that turned objects (or you) into energy, sent it along a cable, then turned it back at the destination? Like, we can create matter from energy with the Matter Generator, and we can obviously make energy from matter with all the normal generators, why not both? Think TRON.
The machine would work somewhat like a HVT, though it would probably require more than just 2000eu, possibly up in the millions. When you load it with some items (probably the size of a normal chest, a redstone signal could activate it), it zaps them and turns it into some sort of special current, which travels down the cable (splits could halve the material at each exit point, and any normal machines tied in should just break from the massive energy surge, even HVTs) and gets to another machine. (as we don't want to use multiple ID's, it would probably have to have a very distinct difference between normal energy input and the special energy, so that the system only needs one type of machine that can both send and recieve) That machine turns the energy back into items at the location, and you can retrieve them from the machine.
It could also be possible to use it as a personal teleporter, though it would probably require a new block for that, unless something ingenious could be thought up. Perhaps an "upgrade" of the normal one makes a player viable one.
Uses:
-Easily transporting mass amounts of items over long distances, such as between a base and a mine.
-Makes machines that use other mods like buildcraft or allocators easier to set up. (as it seems most people do)
-Possible teleportation device.
Recipe:
At this point I don't really know, but it should probably include a matter generator, as well as some HVTs, and some of the more expensive items.