I bet you all have heard non-album tracks by your favorite bands that make you go "why isn't this on the album?" Feel free to list your favorite B-sides in this thread, here's a bunch of my faves:
Amorphis: Separated, Too Much to See, Heart's Song, Sign, Godlike Machine, Northern Lights
Barren Earth: World in Haze
Dream Theater: Eve, To Live Forever, Speak to Me
In Flames: Goliaths Disarm Their Davids
Katatonia: Unfurl, Dissolving Bonds, Sulfur, Quiet World, The Act of Darkening, Wait Outside, Ashen
Opeth: Patterns in the Ivy II, Derelict Herds
OSI: No Celebrations
Paradise Lost: Back on Disaster, Sweetness, Deus, Sons of Perdition, Fear, Cardinal Zero, A Side You'll Never Know, Let Me Drown, Ending Through Changes, Master of Misrule, Rape of Virtue
Porcupine Tree: Futile, Cheating the Polygraph, What Happens Now?, Drown with Me, The Joke's on You, Half-Light, Normal
Sentenced: No Tomorrow
Sonata Arctica: To Create a Warlike Feel, They Follow, Peacemaker, In My Eyes You're a Giant, Wrecking the Sphere, Dream Thieves, The Gun (this song is awesome live!), Respect the Wilderness, Nothing More