Oh man, I can't even remember the great ones anymore. There's
this gameplay vid from one of the ogres, but as far as montages go... search youtube for ogre, walshy, halo god, karma, fonzi, KillerN etc...
I used to know them all but they've pretty much all slipped my mind. Rippon's is great and has tons of amazing shots, but a lot of his footage is from matchmaking games against much, much lesser competition (just look how many guests he kills compared to other Halo great montages).