Large monitor productivity… what's the largest display I can buy/which one is most productive?

I’ve long been a fan of two monitors, large monitors and lots of screen real estate. I started with the Dell 2405 24″ monitor, then went to two, then to a 30″ Dell 3007 and a 24″, and even tried two 30″ monitors (and failed since my card wouldn’t drive two 30″ monitors).

Right now I feel like I want to go for it…. I want to have ABSURD screen real estate. If money was no object what’s the biggest, most productive monitor setup I could buy?

I’d like to stick with a Mac to do this, but would consider a PC.

I’m wondering if it’s better to have one huge 42″ plasma and scan my eyes across it, or if I should create a three 30″ monitor setup.

Is there a curved monitor setup I can buy like you see in scifi movies? Seriously, want to spend like $10,000 on monitors and just blow it out–big time.

Thoughts?

(Check delicious for links I’m collecting, or post to comments here)