Well if you thought Happy Days 7th season with Richie Cunningham leaving was a sign you should look at Home Improvement's 7th season as well when Johnathan Taylor Thomas left the show since he moved on to Costa Rica to a study program. But after that season when Brad and Mark were the only one's left. The show ended but at least it had ended on a high note with Al and Trutti getting married in Tim's Backyard and Tim moving his house to another city.

But for That '70s Show if they would follow the trail of Home Improvement for likely it's last season, than it would end great. 8 seasons of T70sS is good but 9 would really be overdoing it! :rolleyes: :D