Okay, so there aren't that many videos to have come out of gamescom today. Maybe only millions. Okay, maybe only twelve.
If I had to recommend a couple of the videos, I'd suggest you take a gander at Remember Me (looks like a sci-fi Uncharted/Mirror's Edge progeny) and Crysis 3 (few vs. many asymmetric multiplayer). The full list is below.
gamescom: Capcom announces new IP Remember Me