We're still in a state of denial about this: Australian-born actor Heath Ledger was reportedly found dead at a Soho apartment earlier today.

The star of "Brokeback Mountain," "The Dark Knight" and "I'm Not There" was 28.

TMZ is reporting that the actor had a substance abuse problem.

AOL News has a retrospective of Ledger's work.

We'll let you know when we get to a state of acceptance, which will probably be a while.