Top 3 Rubber Suit Monsters

[king_ghidorah]

Ok, I think "This Island Earth" is not the greatest of films but I have grown to love the design of the Metaluna Mutant.  He's deff up there on my list...as is Robby the Robot 

[ZimMan2]

Just speaking in terms of personal favorites:

Gillman
Rodan
The original Predator

[Dr. Mortose]

Alien
Creature From The Black Lagoon
Godzilla

[Phantom Stranger]

Gotta agree with most of the crew:

1) Godzilla
2) Creature From The Black Lagoon
3) Alien