Thanks for the comments.
I'm a graphic designer/website designer/photographer (although only been doing photography for a couple of years)
Its a 30" display and its fantastic, so much better than my old 21" CRTs, although I do miss the extra width I had with the two 21" screens, I'm hoping to add a second display to the set-up at some point.
The box on top is an eSATA box with 1.5TBs in it as backup to the 2TBs in the machine

its super fast! I decided to go eSATA when I got the Mac Pro rather than tons of firewire/usb Hds and it was the right decision.
I was/am tempted to pt the tower on the floor just because the 24" imac 5 feet to the left of this set-up does look very nice without the tower the 30" screen would look nicer

But its such a great looking piece of kit that I couldn't face hiding it away!! lol (not yet anyway

)