obviously it depends on what you're trying to do...

my favorite cheap interior materials are just engineered woods. mdf, ldf, and osb can be sanded smooth and shellacked like anything else. of course, this is if you are leaning for a more industrial look. mdf is generally very durable though, especially when painted with ceramic paint. there are also a lot of things you can do with fabric; canvas can be pasted on the wall like wall paper, or used to diffuse lighting. different types of felt and lycra fabric also have endless uses. of course i have no idea what you're trying to do...

Thanks bossman,

Actually i think it will be close to an industrial look and sort of an urban professional. whatever that means...

I saw some cool details at a local fast food joint, (Qudoba, Bandana's BBQ) where they used alot of corrigated metal and plastic finished w/ engineered woods.

are there any good websites?

past archinect links that are similar

http://www.archinect.com/forum/threads.php?id=P24742_0_42_0_C

http://www.archinect.com/forum/threads.php?id=P23834_0_42_0_C

http://www.archinect.com/forum/threads.php?id=P19577_0_42_0_C

this is by no means all of them

yeah, good threads... we've been upfitting my loft slowly, I found that material samples are key... and fiberbond

homemade adobe :-)