Agnes Moorehead always does great terror and suspense. Her characters are such adorable and intelligent old ladies that I can't help feeling distressed when they are threatened such as in 'The Old Ones Are Hard to Kill' or 'Sorry, Wrong Number'. I always wish I could be there to rescue them. 

I have been a fan of these shows since childhood and they kept me awake many nights. I would always make sure to be in bed by the time E.G. Marshall came on to introduce the episode.