San Gabriel, CA
My brother has Charter, 5 miles from my residence. Youtube streams 1080p there without any buffering.
Then I drive home to my Time Warner RR connection, same speed 20Mbps, but I can't even do 720p without buffering.
Even my Sprint 4G can stream without buffering.
Edit: I just want to mention I can stream Netflix, and other HD video websites just fine (including porn sites). Just not Youtube =(