TGP is probably their best "metal" song. It's a little too high, I agree, but its meandering sound and heaviness make it so good. It's incredibly emotional in the sense that the frustration, anger, and desperation of the main character are accurately displayed by the music. Top 20 material, for sure.
SilentFox, I have never agreed so wholeheartedly with you. TGP is great, but DT has done at least 10 better songs. It is, however, their best foray into pure heavy metal. I'm fine with where it ended up in the rankings.
TCOT has a killer intro, and hands-down the best ending. The whale part, the lyrics, and many of the verses are mediocre, but it deserves a place in the top 5, if not the top 10.
The intro is excellent, and everything from the ambient section onward (and including it) is superb. In between is less impressive, but still pretty solid, and I'm still not a huge fan of the lyrics (though they are entertaining). I'd place it in my top 15-20 for sure, possibly higher.
Overall, I approve of the results. At first glance, Hell's Kitchen, Scarred, and probably Space-Dye Vest are the only songs I notice that didn't make the top 20, but would definitely make it in my own list. I'd also rank Octavarium somewhere in the 8-10 range (certainly not #1), and I'd remove all but maybe one of the SFAM songs.
Just nit-picking though; the results are interesting and I'm pretty pleased with them.
-J