Well, my stab at it.
You could use English teacher John. It´s still a bit slow, but almost there!
You could open in separate windows/tabs in your computer (using CTRL + T, if your browser is Chrome or Mozilla Firefox).
The conversation (the broadcast, I mean the podcast)http://www.englishteacherjohn.com/podcast/
Well, if you can understand it without the transcript, certainly it´s right time to get something quicker.
Then you could use Speak Up, it has the clip and the transcript as well (not advisable to use the "dubbing of youtube, just read the Speak Up transcript, that will do.) Sometimes there´s a certain delay, though.
Another advantage of Speak up, is that you will know wich accent you are listening, so you can choose which you want to see.http://www.speakup.com.br/index.php/com ... tagaq.html
Tanya Tagaq (Canadian accent)http://www.speakup.com.br/index.php/com ... addam.html
Peter Arnett (Mixed New Zealand/American accent)
If you are past that level, you may be interested in something like the American stream news broadcast on Youtube TV channels, set the "cc" on (caption), to read while watching. Sometimes the letters get "hidden in the background", but not enough to hamper the understanding.This one is, perhaps, what you are looking for.http://abcnews.go.com/GMA/video/toddler ... on=4765066
There are more of this, here.http://abcnews.go.com/video
Hope it somehow helps you.