Casey broke up with Donna, deciding the conflict with the adults to be too much hassle. Donna felt that she and Casey were in love, but Casey cruelly said "I have this thing where I say stuff don't really mean." Kelso said that his brother got bored with his girlfriends and broke up with them. During the summer of 1979, Casey was teaching physical education at Eric's old high school, and Eric was in Casey's class. He likes to call Eric "Foreplay". His last appearance was in the Season 7 episode "2120 So. Michigan Ave". He is later mentioned in the season finale of "That 90s Show" when Donna tells Leia she dated him while broken up with Eric. Charlie Richardson (played by Bret Harrison) is the son of one of Red's war buddies. Eric held a grudge against him from the time that he let some sick children win "Eric's" goldfish in an egg toss. Charlie only appeared in about three episodes towards the end of season 7. Before the beginning of season 8, Charlie accidentally fell off the water tower and died. The water tower is named the Charlie Richardson Memorial Water Tower in his honor. The show originally planned to have Charlie stay the entire 8th season as a replacement for Eric, but killed Charlie off because Harrison got an offer to star in The Loop. Christine St. George (played by Mary Tyler Moore) is a talk show host of What's Up Wisconsin. In the episode "Sweet Lady", Jackie felt she was destined to be Christine's co-host on the show. She persistently tries to get the job, but Christine St. George makes Jackie her assistant instead. After a few episodes, Jackie was fired for knowing too much about her. Earl Arthur (played by Bob Clendenin) is a friend of Red's who worked for Red at Price Mart. Earl frequently came to work late and slacked off on his job, so Red fired him. In response Earl sued Red for wrongful termination, but the judge ruled in favor of Red when Earl arrived too late for his own hearing. Earl later got a job working at a fast food restaurant, where he is again fired for his poor work ethic (this time for repeatedly eating the restaurant's food while at work). Earl appears in the episodes "Red Fired Up", "Roller Disco" and "Radio Daze". Edna Hyde (played by