This may be me drifting into Half Life withdrawal waiting, apparently indefinitely, for episode 3 to be released, but I thought I would put this 10 minute clip of the beginning of episode 1.
This game is now three years old, but it still demonstrates what amazing story tellers and game developers the folks at Valve are. Realize that after the first two and a half minutes, this stops being a cut scene and turns into gameplay, and there are no more cut scenes in the whole game! Within the next three minutes you are re-introduced to four characters and, through deft touches of humour and tenderness, are made to care for each of them. Hell, in most games I couldn't give a rat's ass about about any of the characters after playing the game for hours.
Not to mention the technical achievement of the interactions between Alyx, Dog and the constantly moving, first-person, camera that represents Gordon (not to mention with their environment too). In addition, the subtlety in the animations of Alyx and Dog are better than in most games' cut scenes, and remember, this is mostly gameplay.
Anyway, watch and judge for yourself.
Mike