For anyone that's interested in doing this, I've got two secret santa communities.
The first is for Harry Potter (shocking!) and is at hogwarts_hols.
The second is for Glee and you'll find it at gleefulsanta.
Sign-ups for both start on October 31, 2009 and go through November 30, 2009. You'll be able to post your wish lists and ask for anything from graphics (icons, headers, layouts, etc.) and vids to fic. I'll send out assignments so you know who you'll be a secret santa for and you can post teaser gifts up through Christmas Eve. Starting on Christmas Eve, you'll be able to post final gifts and reveal yourself as the person's secret santa. More details are available in the user info for each community.
If you're interested, feel free to come join and have some fun with it! :)