I was talking with a former prosecutor a couple of weeks ago about the effect of CSI type shows on public expectations. I think there will be growing pressure on state and big city gov't to upgrade crime lab quality. The public thinks CSI is the standard where in most places it's more like high school science class.
That's certainly true in Massachusetts, where the state crime lab facilities are so limited that DNA testing is rationed - each of the 11 state DAs is limited to submitting only 4 DNA samples per month.
The most recent newsworthy case affected by this is the Christa Worthington murder on Cape Cod. It took months before the suspect's sample even got to the lab, then 9 months (instead of 30 days) for the results.