I figured out the best place to see Rifftrax live in the bay area.
The Century theater in Mountain View is right next to Google corporate offices. It is packed full of nerds having a great time.
This time i went to Redwood City and it only had only maybe 50-75 people. Still a great time though.
I saw it in downtown Frisco, at the Century, on Market St. which was only about five blocks from home. Despite having to navigate a huge shopping mall to finally get there, the seats were the awesomest I've ever experienced at a movie theatre.
I went alone and laughed and laughed, it was great. Another woman with curly hair and glasses sat next to me so I didn't feel so alone in being alone. There were practically no empty seats there. I wish more San Franciscans came to this forum.