Saber-Scorpion's Lair Forums have two contests running.
1. Best Movie Scene Vignette
Can you build a good-looking vignette from a movie? If so you'll want to check this contest out. Details right now are sketchy, but the prize "may include some decals." There is no end date as of yet.
2. Song Vig Contest
Like the first, the objective for this contest is to build a vignette, however this one must focus on lyrics from a son. (Though nothing explicit) Again, details are vague, so check it out with the link.
Thank you to Bruce N H for sending this in!