Well, it will not be against the rules if I list all meteor/asteroid movies that I could remember/find and then name the worst... Here's my list (not including Armageddon and Deep Impact):
1.
The Meteor Man (a man was hit by meteor)
2.
Trapped In Space (a spaceship was hit)
3.
Asteroid (no comments

)
4.
The Apocalypse (spaceship was hit by cloud of meteors)
5.
Gamera: Assault of the legion (japanese film, huge meteor falls in the ocean)
6.
Tycus (a scientist is trying to protect Earth from meteor)
7.
Meteorites! (no comments)
8.
Escape From Mars (once again the spaceship is being hit by meteor)
9.
Precious Find (treasures are hidden in the meteor)
10.
Time Lock (prison is built on an asteroid)
11.
Falling Fire (asteroid is heading to Earth)
12.
Starship Troopers (aliens is attacking Earth with asteroids)
13.
Judgement Day (yeah, yeah, another asteroid is heading to Earth)
14.
The day of the triffids (meteors blinded people which saw them falling)
15.
Alien dead (meteor turns kids to zombies)
16.
The Curse (meteor contaminates water on the farm)
17.
Seedpeople (another meteor movie)
18.
Smilla's sense of snow (a girl solving the mystery of meteor)
19.
Invasion (aliens came to Earth in meteors)
20.
Breeders (monster came to Earth... guess how... right, in meteor)
21.
Evolution (starring Agent Mulder... Oops, I mean David Duchovny

)
And the "worst movie award" goes to.... "Falling Fire". Low-budget and low-quality movie, lacks any originality - catastrophe, hero, victory, blah-blah-blah.