With Best Picture nominees already announced by the Producers, Directors, and Writing Guilds, Cinematical points out that 5 films were nominated by all 3 unions.

• The Curious Case of Benjamin Button
• The Dark Knight
• Frost/Nixon
• Milk
• Slumdog Millionaire

This strongly indicates that these 5 movies will be the nominees for Best Picture at the Academy Awards:

It turns out it is pretty common for a movie to be nominated for all three of these. (It helps that the WGA nominates 10 films, increasing the chances of overlap with the other awards.) The PGA awards are the newest, having begun in 1990, and since that time 43 films (not counting this year's) have hit the trifecta. And of those 43 -- and this is the important part -- only three have then failed to be nominated for a Best Picture Oscar.

Hey, as long as Changeling isn't nominated, I'll be happy.