TimeGate started as a mini-convention dedicated to two TV shows: Stargate and Dr. Who. It expanded to a three-day convention several years ago and it now covers other TV shows and movies, gaming, genre literature and costuming. Here is the website:
When you are at the site navigate your way to the gaming page and take a look at the tabletop RPGs we will have at the con.
I'm the Gaming Coordinator for this convention so if you have any questions, feel free to ask.