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No it wasn't the blob, it was some kind of alien.

I will look into that... thanks :)

No this is an alien that looks like a leech, there's no puppets.

I found it!! :)
It's either called Joey or Making Contact
http://www.imdb.com/title/tt0089378/

It was a hamburger! I've been looking for that movie as well!

I think what you're talking about is "the great land of small"
http://www.imdb.com/title/tt0093116/

It's an 80's or early 90's movie where this astroid comes out of space and lands on a farm and this little creature comes out that looks like a leach. I remember a scene from where they're playing...