Lots of great MOCs are being created for the Micro Sci-Fi Contest, including these twoo that feature monorails: Jason Alleman's City of Tomorrow and 4estFeller 2.0's Utopia.
In another contest, Eurobricks invites you to enter the Micro Sci-Fi Contest. In addition to winning LEGO sets, Si-MOCs made these great trophies. Follow the links for contest details. You have until the end of the month to enter.
FBTB is hosting Palpatine's Shrink-O-Matic Ray Contest.
You are challenged to build a SW vehicle at the scale of the microfigs found in LEGO games. You know, these guys:
As some inspiration (or intimidation), the first entry I've seen is Chris Maddison's depiction of General Grevious escaping from Obi-Wan: