An omnibus of I Have No Mouth and I Must Scream (1983 version > 1967 version), Deathbird Stories (1984 version), and Shatterday (1980.) In addition to the new introduction by Ellison for the omnibus, I Have No Mouth and I Must Scream has been further revised - it omits the last 2 stories (which appear in Deathbird Stories), and substitutes 1 essay and 2 stories not previously in any edition of that book. Several of these won Hugo and/or Nebula awards - at least one in each collection - along with even more award nominees.

(Introduction by Harlan Ellison)
--- I Have No Mouth and I Must Scream:
(Introduction by Theodore Sturgeon)
(Preface and Foreword by Harlan Ellison)
I Have No Mouth, and I Must Scream
Memoir
Big Sam Was My Friend
As Another Sees Us - (original title: "World of the Myth")
A Friend to Man
Eyes of Dust
The Sky is Burning
Lonelyache
--- Deathbird Stories:
(Introduction by Harlan Ellison)
The Whimper of Whipped Dogs
Along the Scenic Route - (original title: "Dogfight on 101")
On the Downhill Side
O Ye of Little Faith
Neon
Basilisk
Pretty Maggie Moneyeyes
Corpse
Shattered Like a Glass Goblin
Delusion for a Dragonslayer
The Face of Helene Bournouw
Bleeding Stones
At the Mouse Circus
The Place with No Name
Paingod
Ernest and the Machine God
Rock God
Adrift Off the Islets of Langerhans: Latitude 38 54'N,Longitude 77 00'13"W
The Deathbird
--- Shatterday:
(Introduction by Harlan Ellison)
Jefty is Five
How's the Night Life on Cissalda?
Flop Sweat
Would You Do It for a Penny? (w/ Haskell Barkin)
The Man Who Was Heavily into Revenge
Shoppe Keeper
All the Lies that Are My Life
Django
Count the Clock that Tells the Time
In the Fourth Year of the War
Alive and Well on a Friendless Voyage
All the Birds Come Home to Roost
Opium
The Other Eye of Polyphemus
The Executioner of the Malformed Children
Shatterday

These first appeared from 1958 to 1980 - in SF. Adventures, Knight, Fantastic Universe, Rogue, IF, Gallery, Haunt of Horror, Fantastic, Coven 13, Magazine of F&SF, Amazing, Cad, Vertex, Heavy Metal, Analog, Omni, Midnight Sun, Galileo, Shayol, Cosmos, Playboy, Orbit 4, Universe 2, New Dimensions 1, Chrysalis 1, The Arts and Beyond, 36th World SF Convention Program.