The current devise facebook plugin (http://github.com/grimen/devise_facebook_connectable) doesn't work with Rails 3.0. Using facebooker2 implement a completely functional Rails 3.0 devise plugin. (Posted by Nitin Shantharam)
Write some way for videoconferencing (like 3+ users), that is cross platform (Posted by roger pack)
This should be something that basically allows one to take a windows computer and "beam" its current screen and audio to console devices. (Posted by roger pack)
The utility that would be useful here would be something like a "virtual audio cable" that takes the input from stdout and redirects it to a new device that *can* be recorded to. (Posted by roger pack)
It would be great if Red Mine had an AJAXed UI like Pivotal Tracker to avoid page loads. There is an api for red mine http://redmineblog.com/articles/redmine-client-access-the-redmine-api-in-ruby/ (Posted by Tommy Chheng)
It would be great if we can access MongoDB from R. The solution can be modeled after the RMySQL package. (Posted by Tommy Chheng)
The task: figure out how to use a "phone call" over a G phone into something so that you can get internet access through that phone call (kind of like the old school modems did). Suggestion: call into a skype connection, use that like a modem somehow, use it like a proxy. (Posted by roger pack)
This plugin should act just like the command+r in textmate, but work in netbeans (and be lightning fast after the first use). Similar to today's "Go To Type" but without the lag (Posted by roger pack)
The General Polygon Clipper offers a lot of useful computational geometry functions. It would be great to make a wrapper for Ruby. (Posted by Tommy Chheng)
In starcraft, battle.net menus aren't drawn and refreshed correctly. The buttons contain no pictures, just text, and whenever they should be redrawn, they aren't. The text is just drawn on top of what was there before. This makes reading things somewhat difficult. (Posted by nick ves)
It is possible to compile GTK+/Gimp on OSX with native support instead of using X11. Doing a manual installation (http://sourceforge.net/apps/trac/gtk-osx/wiki/Build) conflicts with homebrew installed forumlas. (Posted by Konstantin Haase)
A Scaladoc plugin that would look for an annotation like @DSLGrammar, which would sit on top of a singleton (read scala object) representing a BNF grammar of DSL expression. Scaladoc would instantiate this object and generate a nice readable syntax diagram of all expressions found in a package within the Scaladoc. (Posted by Tommy Chheng)