Justin Bieber had a memorable performance on "CSI" recently -- but the only thing "CSI" star Marg Helgenberger remembers ... is that he "was kind of a brat."

Helgenberger appeared on French radio show "Le Grand Direct des Médias" on Friday where she prefaced the slight with "I shouldn't be saying this, but ..." Always a good sign!

She also said the Biebs locked a producer in a closet and put his fist through a cake.

Good thing she never had to work with Charlie Sheen.

http://www.tmz.com/2011/05/08/justin-bieber-marg-helgenberger-csi-radio-interview-brat/

...for having Justin as a guest star on "CSI: N.Y.", trying to lure all of his fans into watching a criminal procedure show they usually didn't watch, anyway.
Was it worth it? Probably not, as the show is currently between cancellation and "we might renew it".

But then again, Justin is still a "kid".

:tv: