Hrm, police procedurals... The last three episodes of Season 6 of the original Law and Order are very good. With SVU, I'd suggest anything from season 2 or season 3. NCIS isn't quite a police procedural, being as they work under slightly different rules, but it's really good for the medical examiner (oh Ducky <3) and actually showing autopsies and forensics a bit. (Although the forensics is unrealistically fast. Sigh.)

For cold cases, anything from New Tricks is excellent but imho the first episode of season 2 is one of the best hours of television I've ever seen.

On other subjects, Hi! It's been a while! How's life been treating you?