When the B777 came out a few years ago we had to get used to taxiing because the nosewheel was so far back from the cockpit compared to normal. As a result of this extra tarmac is used to compensate for this.
On the 777-300 cameras are used to help with lining-up as well as it is the longest aircraft in the world, they are very useful!
Now, to taxi-back (not that I ever have to) you can use reverse thrust. The boring pilots only use this to aid slowing at landing, bt the more adventurous of us use it for pushback as well!
[This message has been edited by FL390 (edited 23 December 2000).]