For the last time... (SMALL SPOILER, DO NOT READ UNLESS YOU'VE SEEN THE MOVIE)

Rating: Null/10 (14 April 2001)

SPOILER: For the last time, it is not a "goof", "plothole", or any of the like that Lenny is able to remember that he has a condition. The tattoo on his hand "Remember Sammy Jankis" is exactly that reminder. Its Lenny's reminder by association.