There is not a standard nor official dialect. There are a lot of dialects. Every region has its own and it also differ district by district or province. Il dialetto romano/romanesco is spoken in Rome.
I found the first three episodes of Boris eng sub, I paste you the links. If you like it contact me and I'll help you to find the other episodes.
https://www.youtube.com/watch?v=TbBysQDhLkA
https://www.youtube.com/watch?v=Two2tVs4ezQ
https://www.youtube.com/watch?v=4T5M0LdqqXE
You'll hear some roman accent here, but not the dialect and not from every character.
Boris e Romanzo Criminale. Ho visto la prima e non la seconda, che comunque è suggerita da molti. Di solito non riesco a farmi piacere le serie italiane, ma Boris è carina. E' comica e satirica. Parla delle vicende di un troupe che sta girando una fiction televisiva.
Ti consiglierei anche Dov'è Mario, la nuova serie di Guzzanti, ma parlano quasi sempre in romano...
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I forgot you wrote in English, should I translate? do you understand what I wrote?
If you like to read something about here it's a file with some plots
http://www.grazia.it/stile-di-vita/cinema-e-tv/serie-tv-italiane-piu-belle
