Top 10 Aliens on Earth. Mars Attacks! (1996)
The Earth Dies Screaming (1964)
Invasion of the Bee Girls (1973)
Daleks' Invasion Earth 2150AD (1966)
Star Trek First Contact (1996)
Bodysnatchers (1993)
Breeders (1986)
Breeders (1997)
Devil Girl from Mars (1954)
Xtro (1982)
Okay so maybe more of a cult movie alternate top 10.
And in no particular order.