This episode really is a great showcase of Mary Tyler Moore's (MTM) great comedic timing and style. She steals the show from everybody!
She is quite out of it when the pills kick in, and MTM is brilliant as she slowly begins to feel really good and gets quite stoned on the pills. She forgets to add ice cream to the sundaes, and then serves it up with gusto, singing, "I scream, you scream, we all scream for ICECREAM!" as she plops scoops into everyone's bowl.
Laura then gets so high she passes out. A really great episode for Laura fans!