As much as I dearly LOVE L&O et al, I also LOVE Saving Grace and The Closer. With L&O, particularly the original, I watch it and try to figure out what real life case the writers have drawn on. Considering that they use real cases to twist around, it's always been interesting to me to see what they do. I love the original CSI, partly because I used to work with the crime lab here in Va. The show has been to crime labs what Top Gun was to the Navy Fighter Pilot program or JAG was for the real JAG section of the Navy. BIG recruiting tool.
BTW, if anyone's interested, there's a LOT of L&O fan fiction on the net. Just google the particular show and put in fan fiction with the term. Some I've read is ok, some is REALLY good, and some is yuck. Just depends on who the writer is and what you're into. At least with the fiction, they go more indepth into the characters than Wolf does.