Here is an example of a flat screen mounted on the wall with the cords hidden in a tunnel in the wall. Once the tv is installed, it is very hard to add a cord so once the Wii was purchased, there's still a visible cord! As with any system, lots of games and remotes were added to the pile. And LOOK at the cords on the floor! There's not a lot of room to tuck in cords at the tv so all the excess ends up on the floor.
Here are some simple solutions! The cord was run to the right of the tv (taped underneath!) and two plants were put there to make it disappear. Two coordinating baskets were added to the area--the smaller one holds games and the everyday remotes and the large one on the floor holds the larger accessories. A simple frame or canvas print works perfectly to disguise the mound of cords--this one was around $15 at Old Time Pottery. The pot of flowers just adds an extra element to balance the basket. It became a beautiful area with just a few accessories!
There is a phrase in the design business--"Decorate Around It". This is a perfect example of when this rule can be used successfully!
If you are mounting a flat screen in your existing home, it is a tricky project to get it right but you can do it! First, determine where it needs to be mounted based on your framing and the height you want. Before you get the tv up, determine where the available space for cords will fall on the wall and then find an area between the framing to poke a hole through. Cover it with an outlet plate that has a large hole in it. Make sure that space does not have electrical on the floor. Do not saw but 'poke' so that you don't cute any wires if they are. Determine the best spot behind your console/table and poke through again. First get the cords up to the tv by dropping a long wire and then pull it all up--be patient here! Attach it all from there and enjoy your gorgeous new tv!
FYI, If you are building a home, you should have your framer make a solid area in the spot where you plan to hang your tv. You should have an idea of the size you plan to put on the wall as well as the height. The 'rule' is eye level when you are sitting but I think if you live like my family does that it should be closer to eye level when standing. Anywhere within that range works, in my opinion and if you are in a large area where you walk around often, like watching TV from your kitchen island in the attached family room, go higher! It has never bothered me to look up from my couch but it would certainly bother me if I couldn't see the TV from the kitchen because it was being blocked by heads on the couch! Then have them make a 'tunnel' from the very bottom of where the tv will be (look at the back for the cord space) to an area within the first 2 feet on the floor where you can run all the cords up to the tv. Plan ahead--if you think you are going to add something, get the cord in the tunnel!