Highlighting a channel name (not the vlue box) then middle mouse dragging, can change the value of a channel/attribute. Pretty sure this is a PC only thing though.
As for the shortcut for select Hierarchy, I don't have maya Handy at the moment, but if you find it in the edit menu, the hotkey should be written on the right side of it. you can set a hotkey for it (or find it's current hotkey) in your Windows > preferences/settings > Hotkeys
Last edited by Kratch : 14-04-2008 at 02:10 PM.