I liked Reeves, he was just a genuinely nice guy with having great friendships with everyone. He was a true friend to both Abby and Bishop, and had fun moments with Torres... I still remember their stint with the disabling of a bomb...
I'm not saying that I miss him from the everyday life of NCIS, but it was kind of cruel for them to kill him off. Though I read something a while back about the actor having some personal problems, so it makes sense that he got to be written off...