Humpfest
A game were people take photos of themselves with various objects. Site contains an image gallery and rules.
http://www.humpfest.ca

Party Game Ideas
Categorized collection of party games and activities for birthday parties, baby showers, wedding showers, and holidays.
http://www.partygameideas.com

Party Games Etc.
Categorized directory of party game ideas and instructions. Includes games for baby showers, bridal showers, holidays, kid's parties, adult and dancing games.
http://party-games-etc.com

The Pumpkin Shell
Ebook featuring information, ideas, and themes for planning and hosting a scavenger hunt game. Other ebooks offered include 25 party games, and kids craft recipes.
http://www.thepumpkinshell.com

The Screen Test Game
Home video camera game in which teams perform short movie scenes. Includes instructions, tip list, and purchase information.
http://www.screentestgame.com

Who's in the Bag?
Game in which each team tries to identify as many personalities on the cards as possible before the timer runs out and the bag or hat passes to the next team.
http://www.whosinthebag.com

Yankee-Swap.net
Gift-giving party game suitable for small to large groups. Offers free download of the official rules for a Yankee Swap in PDF format.
http://www.yankee-swap.net