RX-7X 'Rhino' HAM by lego-nator. This is a neat diorama.
Rex by Pasukaru76. A nice 6P scale mech in my favorite color.
My Lego Hulkbuster 01 by mpchi. A Hulkbuster
that might actually fit on a MFZ table.
MiniMecha Scout by lazarevn. This one's about 10 bricks
tall and uses some interesting connections. If you tweak
it a bit I think you could have something really fun.
Intruder class Sensory Warfare by tomohawxing. This one is full of
greebles and interesting techniques. My favorite bit is the fingers.