It's finally my turn, so here's my top 30 Dream Theater songs!
First off, I'd like to note that I have not listened to WDADU and some of FII. Also, there are songs from 6DOIT, ADTOE, and SFAM that I haven't ranked because I haven't listened to them enough yet. So if a great song you like isn't on this list and you're wondering why, that may be why.
Okay, let's start.
30. Lines In The Sand (Falling Into Infinity)
When my friend told me how bad this song was, I had to take a listen. I was confused at why he thought it was so horrible. It's freaking awesome! Lines In The Sand is a really groovy song. I love the break starting at around five and a half minutes. The only thing I don't care for is in the chorus when JLB goes "LINES IN THE SANNNNNNNNND!!". The note just doesn't seem to go with the song. Other then that, great song.
29. The Silent Man (Awake)
A short Dream Theater song (by their standards), but nevertheless a great acoustic song. The short guitar solo is awesome, and whoever does the backup vocals does a great job. I also love JLB's main vocals. A fabulous ending to A Mind Beside Itself.
28. I Walk Beside You (Octavarium)
I used to love this song a lot more. I still do love it, though. I don't understand why, cause it's a very simple song. I can't really pinpoint what I like about it, but I like it. Uh, yeah...
One more thing. I will assure you that the #1 song will surprise you. ;]