Coworker Coffee - Coffee with a different coworker each week
Serendipity - Serendipity is a PHP-powered weblog engine which gives the user an easy way to maintain a blog.
Cuely - 1-min guided exercises to stay well all day with reminders
Twine - Twine is an open-source tool for telling interactive, nonlinear stories.
Virus Cafe - Make a friend in 2 minutes
LetsLunch - Do more with your lunch hour. Meet new people.