Worst Movie Monster costumes of all time! (And other notable mentions)

[Rothgil]

A friend and fellow cheesy horror flick fan brought this countdown to my attention:

http://www.youtube.com/watch?v=ubYC5h0jmq0

A top 5 of really bad movie monster costumes.

So I ask you, my fellow forumers, what horrible movie monster costumes have you seen?

Edit: Here's an interesting little bugger from a movie titled "It Conquered the World!"