I was reminded that this was a thing recently. Did anyone else tune into Friday night Prime on Scifi? What was your favourite show?

I was always partial to Farscape. It's still one of my favourite shows.

Was MST3K part of that block?

Not that I recall. It's hard finding any info online about it, but this article goes through the block's programming history.

http://absolutelypointless.net/tv/programming/scifriday.html