Any movie having two actors or less? Please let me know

In Gravity only two actors in total are present in all the scenes of the entire movie. Can anyone let me know of any movie which has equal number of actors (two) or less?
ah, exclude animation movies.

Thanks.

 

I am legend maybe... otherwise the above list is really cool.

 

I was thinking "127 Hours" and "Open Water". I have not really seen too many movies with less than two actors actors.