Answer:

MMI

Answer	Crossword Clue
MMI	A Space Odyssey, Roman Style
MMI	Space Odyssey year
MMI	Classic sci-fi movie?

MMI	2001 in old Rome
MMI	XXIth century start
MMI	Year of the iPod's debut
MMI	Millennium opener
MMI	Year gone by
MMI	Year "Monsters, Inc." premiered
MMI	Kvbrick opvs?
MMI	Start of the 21st century, debatably

MMI	"A Space Odyssey" year, to Caesar
MMI	2001 to Caesar
MMI	2001, as hidden in five puzzle answers
MMI	2001, to Nero
MMI	Start of the 21st century
MMI	Super Bowl XXXV year
MMI	Early in the next century: Rom
MMI	Future year, the Roman way

MMI	This year, to Caesar
MMI	2001, in letters
MMI	"Space Odyssey" year
MMI	2001, to Tiberius
MMI	This year, in movie credits
MMI	2001, to Cato
MMI	Start of this century
MMI	When Super Bowl XXXV was played

MMI	Y2K follower
MMI	2001, in film credits
MMI	21st-century starter
MMI	DCLXVII tripled
MMI	Year President McKinley was assassinated
MMI	Year George W. Bush became president
MMI	2,001.
MMI	Roman numeral.

MMI	Year in the future.
MMI	A year to come.
MMI	Year for a weekend on the moon?
MMI	35 years hence.
MMI	2001, in old Rome.