Not really the same, at DLR it's called the Disneyland Resort Express and is operated by Grayline. It isn't a free service (but since it's part of your package, no worries). Anyone can use this bus, not just people staying on-site. I'm pretty sure they don't have tv's in the back of the seats. Also, your luggage won't magically appear off the bus and into your room. You'll need to tip bell boys for that service.
The bus stops at the Disneyland Hotel first and drops off Disney property staying people first. Then it makes its way around to the off property hotels. Unfortunately, we seem to pick the hotels that are on the end of the route. If you choose this option, don't be in too big of a hurry.
We have used the DL Express 5 different trips and never had a problem. We have stayed on and off site and love this way of transportation. Always had friendly drivers too.
We're using it in September to get to the Desert Inn. Do they play Disney movies? I was under the impression that they do, but now I'm not sure. There is a bathroom on the bus, right?
We have used the DLE many times and have never had a movie playing on the small screens. When we went to WDW, they played a promo spot.
And yes, there is a bathroom on the bus. It is a standard touring bus.