Note: I only watch the original CSI so all of my comments are on that show.
-The lack on continuty. First it was 'Grave Danger', then 'Pirates of the Third Reich'. Oh yeah, I'm so sure Nick got over what happened to him so quickly and what happened with Lady Heather? Did she get charged? It bugs me really badly. I'm sure there are more episodes lacking continuty but I just can't remember the titles right now.
-When Brass or another person besides the crime scene person picks up evidence with a pencil or something. Even if they're wearing gloves, it's still not correct.
-It bugs me how everyone does a little bit of everything. I mean, if Cath (just as am example, I do not have anything against her) collected a piece of evidence from a real crime scene, she wouldn't be able to go back to the lab and process that evidence herself. Fingerprints, DNA, blood, all the evidence at a real crime scene is collected by different people; Not one person who collects everything.
I agree with Roka, it bothers me when they pick something up or move it without taking pictures. Or when they only take one picture before picking something up. In one of the forensic handbooks I read, it says to always take more than one picture (from 1 to 5) of every piece of evidence just to be safe.
Sometimes the CSIs wear jackets that say 'Forensics' and sometimes they don't. I'm pretty sure they should wear them all the time at a crime scene, not just sometimes.
Imagine what the writers/producers would think if they say how many inaccuries we pick up on! :lol: