LOST Missing Pieces
There seems to be a new group of viral marking videos from the creators of Lost. These appear to be short clips that are not deleted scenes, but new clips added the continuity of the overall show. There's going to be around 13 of these short web-episodes. I don't think they'll any major impacts on the overall nature of the show, but just character moments.
I think they jump around the timeline of show. I know for certain the one with Hurley is set during the second season. He was trying to get into Libby's pants.
Here's the trailer for The Missing Pieces.
It looks like episode 3 will be an interesting one involving Ben from the Others.