Joseph L. Scanlan
Joseph L. Scanlan  directed four episodes of . After directing four episodes and seeing how out of control the cast would act when not filming, Scanlan walked out and refused to ever direct any further episodes of TNG again and he never did.  

Scanlan also directed episodes of Spenser: For Hire, which starred Avery Brooks and Quantum Leap, starring Scott Bakula and Dean Stockwell. He also directed an episode of Gene Roddenberry's Earth: Final Conflict and several episodes of The Outer Limits (including one starring Brent Spiner).

Directorial credits

External links 
 
 

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Directors