Yes
Crysis vs. Real-life:
http://www.geekstir.com/wp-content/uploads/2010/07/reallifecrysis.jpg
http://www.theoldbreed.com/imagehosting/68495b11b78f360.jpg
http://www.incrysis.com/incgallery/243.jpg
those are pretty darn cool. grasses and shrubberies seem to be very consistent tripping point for even the most technically advance graphics engines.
as far as skyrim is concerned, I'm really looking forward to some desolate, toothy mountain vistas framed by sharp, thick rasps of trees.
Also, i'm fairly optimistic about the possibilites for really unique and character-ful towns and cities. way back in morrowind, I fell in love with Ald-Ruhn simply for its architecture.