Can you watch free preview of video on Netflix?

Can you watch free video preview of the video on Netflix without signing up?

I can do that on Blockbuster.  Thanks!

You can’t sign into the UI unless you have an account.

However, I believe Netflix does offer a free trial.  You could then sign in and actually watch entire shows for a month or however long the current free trial is. 

I see.  I wish they can do free preview on Netflix like it can do on Blockbuster.

Really wish WD add the Apple railers soon.