Another cool must have is an external usb card reader... I use the Transcend one which fits nicely in my camera bag (Rezo AW 170).
I should add that for Nikon shooters, the 18-200mm VR is pretty good from the shots I've seen and reviews out there.
I am new to the game, does it have a "autofocus" motor in the lense? And I am scared to ask but what is the average price more or less?