I find myself in a command prompt in windows a lot. I enjoy using it. From simple items like getting an ip address or copying files (robocopy) I use it a lot. More recently I have been in powershell a lot more. Powershell uses most of the same tricks as the command prompt.
I have used these tips and tricks from the command prompt – http://commandwindows.com/vista-tips.htm
Recently at teched I found another great tip the “F7” key. I think almost everyone knows that you can use the up arrow to get to your previous command. “F7” allows you to list all your recent commands and then select them. So image a long select script in power shell, you can hit “f7” and look at the script.