Battlefield 3: http://www.youtube.com/watch?v=2zw8SmsovJc&feature=feedlik
Dark Messiah: http://www.youtube.com/watch?v=caB1jodPQPQ
Here are just a few games who have dabbled in this idea of the player's interaction with enemies and the environment in general. I don't know about everyone else, but I personally believe the more interaction we have in a game, the more control and immersion we receive as a result. I think the grab mechanic in Oblivion went a long way to add immersion, even if it never worked that great (at least on the Xbox 360). With that being said, BGS is taking some of these concepts by making combat more interactive and brutal (finishing moves, shield bashes, etc), and there will likely be other things that further improve interaction and immersion for the player gameplay wise. Are you personally a fan of this kind of player interaction, and would you like to see BGS focus more on this? Perhaps it's too late for Skyrim, but certainly it's definitely BGS could work on with Fallout IV and TES VI.