Well as some of you might remember, I ended up getting a replacement, but it turns out it was dust under the glass and not a dead pixel.
The first replacement had a black spot on the screen (cluster of dead pixels?), the second replacement has a speck of dust underneath it again.
I'm through getting it replaced, I'm just going to return it and wait for a brand new one eventually. Way to go Apple. There is no reason that there should be dust under the screen and that I should just 'accept' it.
The Genius at the Apple Store was very unhelpful as well and said he was "doing us a favor and making an exception" by exchanging it. Yea right.
Ok rant over, I just hope now whenever I get my new one, that it has no dust under the screen or any other problems.