Online retailer Ruslan Kogan has been engaged in a war of words with JB Hi-Fi recently, and that has some potentially useful practical consequences if you have purchased a TV from JB this year: Kogan will send you a free HDMI cable.
HDMI cables are one of the more obvious electronic rorts -- since they transmit a digital signal, spending hundreds of dollars on a "premium" cable is unlikely to make much practical difference. We've suggested buying them via eBay from Hong Kong, and I certainly wouldn't advise grabbing one from a large mainstream store.
If you happen to have purchased a TV from JB in 2011, Kogan is offering a free 3 metre HDMI cable -- you just have to email a copy of the receipt before March 31. (Note that will mean you'll end up on a Kogan mailing list -- if that concerns you, you could use a disposable email address.)