I'm currently using Mtgoxlive to view ask and bid walls.
But ... I can't see the chart beyond about $1.5 +- the current price.
Is there another site for viewing ask/bid walls graphically, in a similar fashion to Mtgoxlive, that is limiting in the displayed data?
Also, a nice to have would be historic wall data. There is the Wall Observer Thread ... is there another site that does this?