Professor Farnsworth injects an egg until it explodes to explain to Fry the beaming of 30th century advertisements into people's brains; this references the "this is your brain on drugs" advertisements.
Alien Overlord and Taylor references the department store chain Lord and Taylor
Lightspeed briefs references Speedo.
Calvin Klone fragrance references the Calvin Klein line.
Other references: Ted Danson's skeleton, Sir Mix-a-lot's Baby Got Back, "Historic 20th Century Apartments" sign reading "With Original Asbestos", Rock'em Sock'em Robot toy, the fictional post-2000 AD "Baywatch: the Movie" "the first movie to be shot entirely in slow-motion."
It may/may not happen. Who knows whether it's good or bad?Edit
In the year 2500, Visa may not exist and in the year 2400, American Express may not exist either.
The anchovies may be extinct in the year 2200 which makes it 800 years to the year 3000.
Fry ended up in his underwear in his nightmare because he only sleeps in his underwear.