Lois & Clark: The New Adventures of Superman (1993)

S1E12 All Shook Up

In a dramatic turn of events, Superman experiences a severe loss of memory following a cataclysmic encounter with an asteroid on a collision course with Earth. As a result, he not only forgets his identity but also remains oblivious to his extraordinary powers. This unexpected twist leaves both him and the planet vulnerable, prompting a race against time for those close to him to restore his memory and save the world from impending doom.