I think the corniest lines are the ones from Dr. Gibbs, when he talks about digitizing the orange.
Lora: "Well, here goes nothing."
Dr. Gibbs: "Yeah, interesting. Did you hear what you just said? Here goes nothing."
Lora: "Well, what I meant was-"
Dr. Gibbs: "Actually what we propose to do is change something into nothing and back again. You might just as well have said here goes something, here comes nothing."
It gets worse when Alan shows up, he and Lora join in.
Alan: "You two having fun disintegrating things?"
Dr. Gibbs: "Not disintegrating, digitizing. A laser dismantles the molecular structure of the object, and molecules remain suspended in the laser beam. Then when the computer plays out the model, the molecules fall back into place, and voila!"
Alan: "Great. Can it send me to Hawaii?"
Lora: "Yeah, but you've got to purchase your program 30 days in advance."
That is the biggest load of nonsense I've ever heard. Molecules suspended in a laser beam.
Lisberger also cracked up at this point, during the commentary. He said something like, "If only it were that simple!".