Black Ops. I'm pretty nostalgic for it. It wasn't the best game ever.. but it was quite enjoyable when I was younger and it had some fairly memorable levels.. and some really dull ones. It was overall pretty mediocre and I mainly enjoyed it because it was either the first game I played or one of the first games I played.
Here's a clip of it. It's pretty awful quality but it's a fairly unknown game.. that's the only clip I can find of it on YouTube.
Or it may have been Ocarina of Time. I don't really remember.