I totally agree. I'm not sure The Wire is my favorite show ever, but it's right at the top of the list. Omar was awesome though and is the television character of all time. For me, the final season in general was fine. It was the last few episodes that were a letdown.
Oh, and the best scene in The Wire is where McNutty and Bunk are reinvestigating the crime scene of that girl, only using variations of the word F***.