I'm watching now and it doesn't seem that bad, sure he switches tabs with the mouse but it seems like he is using quite a lot of keyboard shortcuts otherwise. I'd almost wager he has a plugin to emulate vim or emacs keybinds, seeing as he's moving the cursor forward by words and jumping around the code a lot without using the mouse at all.
I come from windows and now use a Mac (iOS dev). I was so used to all windows shortcuts (shift+ctrl+keyright to select a word, ctrl+c to copy, etc), I know what you mean!
I use KeyRemap4MacBook, which kicks in as soon as I connect my hardware windows keyboard to it (which is basically always when I sit down to code). It has a lot of default windows compatibility settings, but you can customize at will. I added a few myself by hand as well (also to get desktop switching the same as I was used to from Ubuntu :).