Dustin Diamond who is best known for playing nerdy sidekick Screech Powers in the original incarnation of 'Saved by the Bell' had died. Dustin was 44. Dustin had shared that he was recently diagnosed with Stage 4 lung cancer. He had been receiving treatment for the past few weeks. According to TMZ his condition in the past week took a turn for the worse and he passed away this morning. His father was at his bedside.