I've put up an original, autographed Disturbed demo cassette tape up for auction on ebay. This is a must have for any collector & true fan! This is one of two tapes they put out themselves (the 'black demo' first then the 'white'). I got this at a gig in 1999, they were handing these out. It looks like only 250 were ever made! Even less were ever signed I'm sure! Bids starting at $.99!

Here's a link to the auction:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=280971436897