Dustin Diamond, aka Screech the lovable geek from Saved by the Bell was found guilty of having a concealed weapon and disorderly conduct. The jury found him not guilty for the felony charge. This all stemmed from a Christmas Day incident in a bar in which Screech was alleged to have stabbed another man in a fight.
Screech apparently did not listen to his Cousin Jim Harbaugh's advice, and for that he is paying for it.
http://www.cnn.com/2015/05/30/showbiz/dustin-diamond-verdict/