[Fez]

you see in all these modern sci-fi films. CGI (Computer Generated Image) aliens, but does it really have the same effect? think of the alien in "Signs" and the aliens in "The thing". There is about 12 years between the two, but what looks better? the thing of cause. So what do you prefer?

CGI
good points:
no limits
easyer to make
bad points:
looks crap
hard to act with
expensive

puppets
good points:
looks real
much easyer to act with
has a higher "scare factor"
bad points:
very hard to make
expensive.