Does anyone knows if there is a shortcut to show only a single channel in the graph editor ? (eg. key + click) I always have to uncheck all channels but one to work... And that's quite annoying.
You can select the channel and press Shift+H to "Hide Unselected Curves". This option is also found in the Channel> Hide Unselected Curves menu in the graph editor.
You can then press Alt+H to "Reveal Curves" to bring the hidden ones back.