If you have a big screen TV, this new app from THX
may be of interest to you.
THX tune-up (TM) allows you to properly adjust your TV, projector and speakers, helping you get the most out of your entertainment system.
THX tune-up features custom video test patterns, carefully selected photos and tutorials to help you adjust and confirm the best picture settings on your display based on your room lighting. Using special test sounds, THX tune-up also lets you check your external speakers to make sure they are working in phase and are connected properly for 2-channel stereo or 5.1 surround sound systems.
THX tune-up is completely interactive and you will be able to go through it at your own pace and in any order. Use your iPad 2 (or later) or iPhone 4 (or later) to connect to your display or sound system with an AppleTM Digital AV Adapter and HDMI cable or through a wireless Apple TV.
I used it today to discover my AV receiver was messed up and some connections were reversed. Apparently it is free for the first week and $1.99 afterward. You will also need Apple's 30-pin Digital AV Adapter
or Apple TV and an HDMI cable of at least 6 feet in length.
Need-based health care not greed-based health care.