Their new song, "The Running Free" is pretty sweet. You can DL it on iTunes and the like or listen to it on their *shudder*MySpace.
I can't choose a favorite song, although I'm partial to In Keeping Secrets of Silent Earth: 3 (the song) and The Crowing.
Also Willing Well IV: The Final Cut is some amazing guitar.
Part 1
<object width="425" height="350"><param name="movie" value="http://www.youtube.com/v/jWtulDflqq0"></param><param name="wmode" value="transparent"> </param><embed src="http://www.youtube.com/v/jWtulDflqq0" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"></embed></object>
Part 2
<object width="425" height="350"><param name="movie" value="http://www.youtube.com/v/PyqppAk636Y"></param><param name="wmode" value="transparent"> </param><embed src="http://www.youtube.com/v/PyqppAk636Y" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"></embed></object>