I mentioned Dahboo77 in the last post, but he had one right up front that was pretty neat. A recent photo from NASA shows "stuff" there. Here's a link to the original photo.

http://mars.jpl.nasa.gov/msl-raw-images/proj/msl/redops/ods/surface/sol/00528/opgs/edr/ncam/NRB_444375405EDR_F0260184NCAM00254M_.JPG
And another one

He mentions an earlier (longer) video, and I believe this is it. http://youtu.be/5Tz6b9lpyq0
.