There's a great blog post by David Simon on the conversion of The Wire from 4:3 to 16:9 [1]. It goes into a lot of depth about some of the trade-offs and considerations as well as the lack of communication from HBO. Unfortunately, the video examples don't seem to work anymore. I can't help but wonder if HBO sent YouTube a DMCA takedown for David Simon's clips from the post (or they got taken down automatically). It's pretty sad if the creator of a show can't even post short clips from it to illustrate some of the design decisions behind them.