They won't necessarily always have the same effect anymore, but songs that sometimes give me chills or have moments that I've really connected with, often during some sort of epic climax or solo:
- Lines in the Sand (guitar solo)
- Octavarium (multiple parts)
- Beneath the Surface (synth solo)
- Breaking all Illusions (guitar solo + organs)
- Disappear
- Voices (guitar solo)
- Beyond this Life (guitar solo)
- Endless Sacrifice
- Repentance (guitar solo, vocal harmonies)
- Illumination Theory (multiple parts)
- The Bigger Picture (guitar solo)
- The Best of Times (guitar solo)
- Wither (guitar solo and sometimes verse/bridge sections)
- A Change of Seasons (probably some parts of The Darkest of Winters and Another World sections)
- Along for the Ride (synth solo)
- Blind Faith (string of epic solos)
- Hells Kitchen
- Misunderstood
- New Mellenium (light at the end of the tunnel)
- Profits of War (spoken section)
- Finally Free (bell section, outro)
- Surrounded
- Trial of Tears (wasteland)
Songs that can get the adrenalin pumping:
- The Glass Prison
- Lost not Forgotten (tickle)
- A Rite of Passage (bridge/solo sections)
- The Count of Tuscany
- Panic Attack
- Constant Motion
- In the Name of God
- The Mirror
- Honor Thy Father
- Home
- The Enemy Inside
- The Root of All Evil
So uh... That list got pretty long pretty quickly.
But all of these songs have done something for me at least a few times for various reasons. There's probably more songs with moments that don't occur to me at the moment but there you have it.
EDIT: I heard Buddakan version of Hollow Years after a while at work today, and realised, despite all the praise this version gets to the point of seeming overrated, that guitar solo really is something special.