I would say put all of those monitors away and get just one huge theatre-like screen, where you can look up, too, not just side to side like in that ugly setup.
First of all, yes, I would hate to see how Crysis plays, unless you have that new 4 GB ATI 5970, or maybe even 2 4GB 5970s (currently not yet released as far as I know).
It would make my neck hurt from looking from monitor to monitor. If you have the money to buy that many monitors, you probably could just buy one whopping big screen and not crane your neck from side to side. 3 is a lot of monitors already.
But then again, I think that I saw a 3-monitor Eyefinity setup where the monitors were in a pyramid formation: 1 monitor on top of 2 monitors side by side. If you could make the 5 monitor setup into a pyramid, 3 on the bottom and 2 on top, that would be better IMO. Or 6 monitors. Or 9, in a square formation.