I used to like That 70's Show, and was able to chew through several seasons on Netflix.  At least until the 8th season when Eric and Kelso left the show.  Suddenly it became unbearable.  Even the return of Tommy Chong couldn't save it.  So I guess, for me, That 70's Show jumped the shark when Eric left for Africa.

For me, it had jumped the shark long before that. To me it was just not that funny.

I know it fails your "nothing with a laugh track" rule, but I thought it was enjoyable, at least for a while.  I guess the bulk of the funny came from Kelso's stupidity.