Starcraft Marine by Tim Schwalfenberg. Technically
not a mech, but still awesome looking.
This is a really well done build.
MD-08 by ferrelferret. Big shoulders and a giant shield. I like it! Built for MFZ but no picture downloads.
Mini Mech 1 by Bers Bers. This is a neat build, full of interesting greebles.
Miner 2 by Joe Murphy. This is a fairly old
picture but, I really like the looks of this one.