Stark Sentry.

I really like the shaping and humanness

to this mech, built by Magus.

The round armor pieces are a nice touch.

I can imagine a dozen of these guys taking down a Sci-fi Fortress somewhere. :)

See it on Flickr.   

Optimal Defense Droid ZR3

Chris, AKA Iornsniper on Flickr, makes some fantastic robots and exo-suits, and his latest one is no exception. 

I love the combination of a square head and unique legs.

Be sure to check it out on Flickr. 

Space Bot

The first word that comes to my mind when I see this creation is "Wonderful!" The Mech is exceptionally well designed, and the way it looks like it's floating through the air is a perfect touch.

Constructed by Nate Decastro. Be sure to check out the other views on Flickr.

R.M.D.S Walker

I'm really not a mecha builder, but when I saw this beast from Justin and Jordan ("General JJ" on Flickr.) I knew I was looking at no ordinary mech. 

The shaping and design is incredible! And the color scheme is unique and refreshing.

But what really amazed me was that it can deploy Another mech from the back! 

Be sure to check this thing out on Flickr.