check your PS3 and DVD, as long as its HDMI on there you wont need it. You can always put one in for an option later on (my xbox is the old one and uses scart, but the new ones dont) To be fair, most things you get now are HDMI. Depending on how far you want to go, you could add some Cat 5 or cat 6 from your router too, as some tvs have ethernet ports - all depends on how far you want to go or what equipment you have