My fave, is a powerball ad. There are 2 young guys who are checking in to their flight and one goes..
"Excuse me, but wed like to upgrade our tickets."
Air hostess- "Sir, you are already in first class"
and then one starts doing dr evil impressions "Upgrade not possible, upgrade not possible..."
While the other is doing an impression of "the monopoly man" form Ace Ventura. "First class?"
The dr evil guy says "do we get slippers?" a woman walks past with a cattle class ticket, "No slippers for you madam."
god it sounds terrible here, but it is so funny.