I was just wondering, when was Arnie's last appearance on Roseanne? I have a book that says he was on there from 1989-1994. Yet, the last episode I saw of him is where he comes back for Nancy when they take self defense. In the lesbian episode, his name is mentioned when Roseanne says about Sharon, "Hey Nancy, how come when you go out with guys, they look like Arnie, but when you go out with girls, they look like that?"

The episode you are talking about was Stand On Your Man which was Arnie's last appearence ( in the final scene he was on the spaceship)

However Tom Arnold's last appearence was in Lose A Job, Winnebago when the family visit the Jackie Thomas Show which aired after Roseanne and starred Tom Arnold, that was in 1993.

Tom never appeared in any episode as anyone after that and he Roseanne split in between seasons 6 & 7.