I had the optional rear entertainment system already in my Limited so I modified the base, recovered it, removed the AC controls and the old 7" flip down screen and DVD player and replaced it with a 15" with integrated DVD player with IR remote control so the kids in the back could control it.

I avoided the problems integrating aftermarket DVD by also replacing the factory CD head unit with an aftermarket bluetooth, navi, 7" DVD head unit from Pioneer.

I also replaced all 6 factory speakers with 10 new ones and a couple of amps. No subwoofer yet but the kids mostly use wireless headsets to watch movies on trips so don't really need the extra bass since my wife and I aren't terribly demanding listeners when it comes to music and I'd rather have the storage space in the back than the deep bass. Six 6x9's and four tweeters gets the job done pretty well... :-)

I'll snap some pics later today to add to the thread.