A lot of people may think the abbreviation is Thank God It's Friday, which is kind of adopted meaning for it, but the commercials themselves have the stars saying, "Thank Goodness It's Funny." Thank goodness it was too, because I loved all the TGIF shows. This was a time when staying home on a Friday night was the thing to do. Me and my sister would camp out in the living room every Friday and watch two hours of the highest quality programming.
I'd be interested to see what someone with no nostalgia for these shows thinks of them. Would they enjoy them or are they awful relics of their time? I think some of them hold up, but just about as much as any mainstream show holds up. It's not like every TV show we create now is art.