Yep, thats one idea. I could even go LCD backlighting.

See: http://hackedgadgets.com/2007/02/18/...ed-conversion/

Not cheap but I have worked a lot with the Luxeons actually.

http://luxeon.com/products/luxeon/

Chinese companies make some compelling knock offs at about 50% less cost if you buy in bulk.

That is certainly an option for a DIY route. But I will be unable to use the 30" monitors as a single 25 megapixel desktop without some serious software modifications - I know it is POSSIBLE with Linux but its difficult to setup X to make it work that way. And there would still be bezels between each image.... something I really want to avoid.

If you really wanted to do this on the cheap though, I think that would be a great way to do it. Buy some with broken backlights and just hack em together.