I've been liking short stories lately. Perfectly built small objects isolating and exploring a theme or feeling. I like them dense and explosive; they can burst open with one sustained mood or idea in a way that longer things can't. But I also like them clear and precise, finely crafted. What are people's favorites? Some of mine, in roughly descending order:

Tlön, Uqbar, Orbis Tertius (Borges)
The Metamorphosis (Kafka)
First Love (Beckett)
The Crocodike (Dostoyevsky)
The Double (Dostoyevsky)
Why Don't You Dance? (Carver)
Gazebo (Carver)
The Soldier and Death (Minghella version)
Pierre Menard, Author of the Quixote (Borges)
The Rats in the Walls (Lovecraft)
The Cloud Sculptors of Coral D (Ballard)
The Assassination of John Fitzgerald Kennedy Considered as a Downhill Motor Race (Ballard)
The Balloon (Barthelme)
Gimpel the Fool (Singer)
The Judgement (Kafka)
The Tell-Tale Heart (Poe)
Ligeia (Poe)
Rumpelstiltskin (Brothers Grimm)
I and My Chimney (Melville)