Here's three of mine. The first is self explanatory pretty much. I wanted to show the scale of the Excalibur and Ent-J, but the one in the middle outshines them both.
The second is from the TNG episode where Riker transferred to the Klingon ship.
The third should have this kind of conversation going:
Fry: Leela, aren't you flying a bit too close to that strangely familiar looking ship?
Leela: Relax Fry, we're plenty far away from it.
Fry: Um, wait. Don't you have depth perception problems since you only have one eye?
Leela: Yeah, so what?!
Bender: Well, we're boned.