Here at Mother Nature Network, we engage in all sorts of pranks around the office for April Fools' Day (for instance, I'm currently glued to my chair), so we decided to do a roundup of some of the best April Fools' Day pranks we could find. Hopefully they’ll supply some inspiration for your own pranks!

University of Arkansas floor change

In 2010, the staff of University Relations at the University of Arkansas redid the eighth floor to resemble the ninth floor in this well-executed April Fools' Day prank.

Key switch

Some co-workers have swapped a colleague's car keys with a fake set. They then recorded the April Fools' Day prank in action.

Math class shadow

As a special treat for his Nature of Math class at California's Biola University in 2010, Matthew Weather made it appear as if his shadow had hijacked his computer. The video went viral, making this one of the most popular math classes ever.

Leftover pizza joke backfires

Let the prankster beware! An April Fools' prank wherein the lure of leftover pizza puts the prankster in the "hot seat" with human resources!

'Hollywood Squares' prank with Tom Bergeron

Even a seasoned pro like Tom Bergeron, host of “Dancing with the Stars,” can become the victim of an April Fools' Day prank. Here, the producers of "Hollywood Squares" have hired two actors to be the most difficult contestants Bergeron has ever dealt with.

Know some other hilarious April Fools' Day pranks? Let us know in the comments.