By now, you've probably heard they got the guy who killed the dentist in the 64th/Yellowstone area of Forest Hills. Best part of the story, they had his fingerprints on file from when he was arrested in 1994 for trying to squeeze two people in the turnstyle with one token. He was 37 at the time. And the fare was $1.25.
They went over the prints from the gun part against relatives of the wife and came up with the 1994 match and arrested him. Tokyo Teriyaki must have been rocking that night.
Here's the best recap of this interesting case: http://www.amny.com/news/local/am-queens1121,0,5511819.story