[quote name='ryanbph']great price on a solid show, the only problem with the law and order series, is there is no continuing story line. Each show finishes off any storyline, and really are only worth watching one time. Thats just my opinion.[/quote]
If I recall, there was only one particular case in the original Law and Order and one particular case in Criminal Intent that involved a particular suspect appearing twice. Larry Miller was in two L&O episodes, if I recall, as a suspect in his wife's death (both, a few seasons apart from one another) while that Australian woman appeared at least twice in Criminal Intent.
Honestly, the connected material works out well for them, so long as it doesn't necessarily span into different series. Then again, watching Munch almost come to blows with Briscoe on a Homicide/L&O crossover due to the fact that Briscoe slept with Munch's ex or wife or something in the past was pretty damned hilarious.