You people do realize that when we finally get cybernetic limbs (as in what you see in science fiction movies) their actual usage will be confounded by greed and incompetence.
For example, this is me in the future. Through some terrible accident or another, I've had to have my left arm replaced by a hunk of neuro-sensitive metal.
But of course, this being Earth, populated by *humans*, the very same *humans* that provide you Microsoft, AOL, and the concepts of spam, unlimited advertising, and finally - *frivolous lawsuits*, we find ourselves experiencing a totally different reality than the one provided by Hollywood. Let's take a look-see, shall we?
{Microsoft ARM-HELPR-L}: Activation! What would you like to grab today?
{Seven (Thoughts transmitted to cybernetic arm)}: I need to put that muffin on that plate.
{Microsoft ARM-HELPR-L}: Please sign the End-User Lisence Agreement.
{Seven (Using remaining arm)}: Right. There. (Thinks: Now pick up that muffin and put it on the plate.)
{Microsoft ARM-HELPR-L}: Commencing search and seizure of muffin.
{Seven}: Any day now.
{Microsoft ARM-HELPR-L}: Muffin found.
{Seven (Thought transmission to arm)}: Right! Now pick up the muffin!
{Microsoft ARM-HELPR-L}: Muffin obtained.
{Seven (Thought transmission to arm)}: Great. Now move it over to the plate!
{Microsoft ARM-HELPR-L}: Commencing search parameter for 'plate.'
{Seven}: You know what a plate looks like!
{Microsoft ARM-HELPR-L}: Plate found.
{Seven (Thought transmission to arm)}: Now put the muffin on the plate!
{Microsoft ARM-HELPR-L}: Commencing Operation: Muffin Transportation.
{Seven}: You don't need to tell me that! Just move the freaking muffin! What's taking you so long?!
{Microsoft ARM-HELPR-L}: Critical service failure. Please contact Microsoft if you are experiencing technical difficulties. Program (Operation: Muffin Transportation) halted.
{Seven}: Oh yeah?! Let's see how you like orange juice, Mr. Critical System Error!
[[Several hours later, at Seven's place of work.]]
{Boss}: Say, Seven, it looks like your cybernetic arm is attempting to shove a muffin into your left ear.

As for creating genuine AI like "The Architect" in the Matrix, or "Data" from Star Trek, I just don't see it happening.
Apoptygma Berzerk - Welcome To Earth - Fade To Black
7

<-----I need a Borg Emoticon.