Vice President Joe Biden made a cameo appearance on Thursday night's episode of "Jeopardy" by providing video clues to a category about the vice presidency.

"Since 1974, the official residence of the vice president has been on the grounds of this astronomical agency of the United States," Biden said.

One of the contestants correctly answered, 'What is the Naval Observatory?"

The vice president also provided the clue for the "Daily Double."

"The vice president is a member of the board of regents of this, 'America's attic,'" Biden said.

The question: What is the Smithsonian?

Biden recited clues about former vice presidents John Adams, John Tyler and John C. Calhoun.

This wasn't the vice president's first appearance on the "Jeopardy" game show. Last year, Biden provided the clues for a category called "Cars in America," which included a plug for the auto bailout - an issue he often touched on during the campaign - and mentioned one of his favorite cars, a Corvette.