If you already have Fantasy Grounds or you are looking to try it out, FG Con is a virtual convention ran around the world, 24 hours a day for the entire weekend. Gamemasters are running games in all sorts of different systems and it is free to join. Even if you don't have Fantasy Grounds yet, it is free to join. You can run the Fantasy Grounds Demo from Steam and connect to any of these games for the weekend. You only need to install the demo and register for an open player spot at the FG Con site.
http://www.fg-con.com
As of this writing, there are still around 100 player slots still available. This will begin to close up as we near the event weekend. Don't delay and sign up while there are still a number of games to choose from. Signing up in advance also helps the Gamemaster prepare properly for the number of players that will be in their game and will make for a better experience.