I want to mention Saving Private Ryan, but perhaps ironically the first three times I watched this film, the opening sequence is the only part I watched. It took me four attempts to finally bother to actually watch the rest, not because it was boring or anything... I don't even know why. But the opening scene was just wow, and it does deserve a mention in a thread like this.

The start of Intouchables hooked me immediately. I loved it.