speed training

What kind of excercises do people do for speed?,foot movement, ability to cover ground more quickly and the ability to maintain it.

A couple of really good threads have been put up by Scrap on this topic:

So you want fast hands ?
http://www.saddoboxing.com/boxing_fo...c,34510.0.html

speed,
http://www.saddoboxing.com/boxing_fo...c,34835.0.html

So you wanna make your feet faster?
http://www.saddoboxing.com/boxing_fo...c,34509.0.html

There's heaps more where that came from but I'm sure other people also have stuff to add..........