Be sure to check out www.monoprice.com for any and all cables that you need. I am using them for my system and my HD projector (projecting on a 106" screen) is just as clear as my 55" LCD. When it comes to hdmi cables they are all pretty equal. I didn't believe it until I started going to www.avsforum.com. That is an awesome site (and addicting) when it comes to home theater.
As far as the biggest ripoff ever that would have to be anything with the name "Monster Cable" on it.