Cheap HDMI cables
Before you go paying $20 to $100 for an HDMI cable at a retail store, check out Monoprice.com. They have 6 foot HDMI cables for $3-5. And for current generation equipment, they're just as good as Monster. They sell all kinds of home theater equipment, not just cables. Their shipping is really good too; I placed my order Sunday night and it was shipped out Monday morning.