Confusing computer interfaces are a prime source for amusing situations in games. Whenever the PCs need to interact with a computer, imagine if the user interface has been programmed by someone competent who actually knows something about usability... or not.

Refer to this classic comic for some inspiration.

Transcript

R2-D2: We need to get off this barge quickly.
C-3PO: Why?
[SFX]: push
C-3PO: Aaargh!!
R2-D2: I'll be there in a second.
Luke: There are too many to fight. Can we jump to the skiff?
GM: You could try with Force Jump, but Princess...
[SFX]: Whooom!
Leia: This is a sailbarge, right? There's rigging?
GM: Er... sure.
Han: Really? That doesn't make—
Leia: Luke! We'll swing across to the skiff.
Han: You need a keel—
Gun: Charging complete! Hit "abort", "retry", or "fail".
Leia: R2!!
R2-D2: This may be the toughest computer interface challenge yet.