Germany - Saudi Arabia
The game might've lacked a variety of goals, but at least it showed a team playing attacking football for a full 90 minutes, which is more than I can say for the other teams that have played so far. And no, not all the goals came from headers in the Germany game - there was a free kick by Schneider, the power shot by Bierhoff, and then of course, the 6 goals by head. So, I guess you have a goal variety of 3 goals in just one game - how many goal varieties did you get from the other games? I don't find PK goals that attractive, and the other goals so far have been generally average (with the exception of the Irish goal, and that other goal that happened the same day).
If I were to pick a runner-up for best game, I'd also say France - Senegal. The game was far from attractive, and lacked quality goals, but I love Senegal for playing with their hearts, and defeating a seriously over-rated team.
Another fine game was Denmark - Uruguay. That was a bit of a see-saw contest. =)