Consultant: Someone who, when you ask him/her the time, asks to borrow your watch, then tells you the time, and keeps the watch as her/his fee.
Consultant: Someone who obtains his/her advanced education from his clients' most knowledgeable employees, and then bills the client for the privilege of teaching her/him.
Or, as Joel Spolsky explains, someone who writes really, really poorly, for people who read and think even more poorly.
At least when I do consulting, there is good and interesting entertainment value!
[Technorati tags: consulting | joel+spolsky]