And here's a couple more for Frank and Tim (who do seem to get the most fan attention... but never fear, Meldrick and Mike, I still love you!).

Five-Finger Discount (http://romanticalgirl.livejournal.com/686906.html?format=light&mode=reply#cutid1). “Is that what you’re going to do? Give up your career as a cop to be a hand model because some hairdresser told you to?” Very short. That conversation they must have had about Tim's haircut in season 4. Pitch-perfect, with the funny conversational cul-de-sacs so characteristic of their relationship and Homicide dialogue in general.

Shell Casing (http://www.geocities.com/ducklie/11cents/stories/shell.html). My very favorite part:

"Then say you're perplexed. Don't 'hmmmm' me. You're starting to
sound like Howard," Pembleton said. "The English language is a great
invention, use it."

"Maybe Clary picked up the casing after he shot him," Bayliss said.

"He didn't have it on him when we picked him up," Pembleton said.

"He could have dumped it on the street. Or in that bar."

"Why would he drop the gun with his prints all over it almost on top of
the body, then stop to pick up the casing, and then flee in a panic?"
Pembleton asked.

"He didn't know what he was doing, Frank. He freaked out after he shot
Ramsey. People do weird things when they're under stress," Bayliss
said as he kept scanning the carpet.

"I don't," Pembleton said.

"Yeah, but I don't think you're a regular person," Bayliss said.

A mini-casefile set in season 5. Practically perfect in every way, especially the ending!