A source-cited reference to television episodes about nightmares
A Beautiful Darkness · Insheeption · The Midnight Sun (The Twilight Zone) · Night Terrors (Star Trek: The Next Generation) · Nightmares (Buffy the Vampire Slayer) · Orb (Adventure Time) · Perchance to Dream (The Twilight Zone) · Phineas and Ferb Get Busted! · Shadow Play (The Twilight Zone, 1959) · Somnambulist (Angel) · Toilet Paper (South Park) · Tom Thumb Tempest · Twenty Two (The Twilight Zone) · Via Negativa (The X-Files) · Flanders' Ladder · King Worm · Person or Persons Unknown