The main site has had a mobile version for a few months now and although it was an improvement over not having a mobile version, I don't think it was as good as it could be. The main problem was that it was hosted by another company who would traverse the site every time somebody requested a page on the mobile version, making some pages load very slowly for users. There were also problems with which content it could display and couldn't, and the inability to serve different layouts for mobile users where the content would be more useful that way.
I've been working on a mobile version of the site that works more like another theme, so it's on the same server as the site and just displays the content differently. It has a few design and layout changes, but in effect it's a lot like the main site if you just remove the sidebars. The design is more closely based on Version 4, the blue theme, as the header and layout style seemed better suited to mobiles.
I've tested it on a couple of devices and it seems to work fine, and be an improvement over the previous version, but I would like any feedback you may have. I am aware of a few problems with the shop pages, in particular. That content isn't easily slimmed down for mobiles.
If you're on a mobile device, you should see the new mobile site automatically when you visit the main site. If not, you can visit m.the-big-bang-theory.com to see it. I have attached a few screenshots below to show what it should hopefully look like.