The episode where Michael Scott burns his foot on a George Foreman grill is titled "The Injury."
It is the twelfth episode of The Office's second season and originally aired on NBC on January 12, 2006. Michael keeps the grill beside his bed so he can cook bacon without getting up, but accidentally burns his foot and calls the office for help. Dwight rushes to rescue him, only to crash his car and suffer a concussion.
Michael's injury becomes the episode's comic centerpiece because he expects extraordinary sympathy while treating Dwight's more serious condition as secondary. He also brings in Billy Merchant, the wheelchair-using building manager, for an awkward discussion about disability.
A common mix-up is remembering the episode as "My Grilled Foot," an early proposed title. The writers changed it to "The Injury," which better matched the broader story involving both Michael's burn and Dwight's concussion.