The Electronic Frontier Foundation has been doing daily updates to a list of devices that will become illegal if things go bad MGM v. Grokster. The Grokster case, which will begin Supreme Court hearings on March 29th, is essentially a test of the 1984 Betamax rulling. The Betamax rulling decided that copying technologies could not be considered illegal (as being able to encourage copyright infringement) as long as they had substantial non-infringing uses. If MGM wins this lawsuit, the Betamax case will be null and void. The list posted by the EFF is an effort to raise awareness about just what can be effected by this case.

Link.