I can't find this commercial right now but it's somewhere in the media archives - a UPS commercial that shows the captain greeting his 'passengers' on the intercom right after they've arrived at the gate. His FO and FE are both rolling their eyes while he's speaking to his 'passengers' then the camera slowly moves back to shows the boxes in the back of the airplane. I thought it was a funny commercial (mid 90s I think?)

Otherwise I agree with you, I really wish we had more funny commercials - after all those are the ones people remember!