"Whatever you do Donna, avoid the rope in the middle of the room"
This is the episode that actually introduced me to watch this amazing show. Coincidentally the first episode I watched was "Donna's Panties" but that didn't really get me in to this show immediately, but when I watched this episode I was hooked.
I would have to say that this episode contains it's best fantasy on That 70s Show. In which Donna reminisces if there have been other girls... other panties. Panties flying everywhere, it's that kind of humor and reaction times that make this show great. Basically Eric's lab partner, Shelly, becomes interested in him. Eric finds it strange that Donna isn't jealous, but Donna starts to wonder if it is something to worry about when she finds panties in Eric's car! Fez & Kelso did great in this episode as well, great as supporting characters and another classic That 70's Show quote is in this episode: "Tater Nuts! Tater Nuts!" Meanwhile Red has high cholesterol, so he's forced to eat heart healthy food. All the while Laurie, Hyde and Kitty are all enjoying REAL food. At the end: big twist! The panties were Midge's panties! She had sex with Bob in Eric's vista cruiser! There were many fun fantasies in this episode such as Kelso and Fez thinking about the cotton panties, Eric and the panties, and a mud fight between Donna and Shelly. This was That 70's Show at its best. Contained amazing elements to make one of the best episodes in That 70s Show history.