My fave song on Skydancer is "Shadow Duet" and a killer riff is that which starts at 6:49 and ends at 6:55. The main lead is great too.
From The Gallery "The Dividing Line", the part from 2:24 until 2:56 is absolutely brilliant. And so is the bass intro to "Lethe", beautiful.
From "Haven", my fave song is "At Loss For Words", that clean guitar intro, masterful! "Fabric" kills too...