The Bird Watcher's Digest Big Sit is this Sunday. I had big plans earlier this year to make this a huge blog event and then my family decided to visit this weekend. I will be doing a big sit, but it will be in a blind out in the middle of nowhere (and it is out there, I don't even get cell reception). Next year, and I will have to make a note to have my mom not visit on the Big Sit Sunday.
Bill of the Birds and I made a video of how to do a big sit that's still on the Eagle Optics site. Remember that you need to download the movie to watch it. The first half is an interview, but the last half is the best where demonstrate how to do it. the video is roughly eight minutes long.