There are some people who can't even listen to "Dead Boy's Poem", because it depresses them so much. "Comforting home, mother's lap, chance for immortality - where being wanted became a thrill I never knew," and, "I live no more to shame, nor me, nor you, and you: I wish I didn't feel for you anymore."
As well as "Creek Mary's Blood" and "Ghost Love Score".
"The Poet And The Pendulum" isn't tearjerky at start, but is very emotionally fraying. You're pumped up, you're nostalgic, you're disturbed, you're creeped out... then comes the soft and emotional final part ("Be still, my son... you're home..."), at which point you burst into tears.
Then there are "Eva", "Higher Than Hope", and "Meadows of Heaven"
"Kuolema Tekee Taiteilijan" from Once definitely qualifies. For starters, the title means "Death Makes an Artist" in Finnish.
And even "While Your Lips Are Still Red" - which is sung by Marco Hietala, the bassist.
Tuomas crying during "Ever Dream" on "End of an Era".
"Song Of Myself" will pump you up and then make a grown man sob at the beauty and the sadness of it. It's the kind of song that makes you look back at your life and go "did I do it right?" About seven minutes in is the sudden switch.
"Dear child, stop working. Go play. Forget every rule. There's no fear in a dream."
The utter crap Anette was put through by a good portion of the fandom can make one have a bit of sand in one's eye.
Same with Floor. She's getting hate from Brazilian Nightwish fans, and has admitted that she's been so stressed it's been giving her nightmares.