I've been meaning to throw up a post that lists all poem fandoms. Here's the list I've compiled so far:

Gilgamesh - Anonymous
Iliad - Homer
Theogony - Hesiod
Mahabharata - Vyasa
Beowulf - Anonymous
The Song of Roland - Anonymous
Goblin Market - Christina Rossetti
Dolores - A.C. Swinburne
The Tay Bridge Disaster - William McGonagall
An Irish Airman Foresees His Death - W.B. Yeats
Hell Gate - A.E. Housman
The Hollow Men - T.S. Eliot