I cannot choose from the list. Each has its own charm. I did dig the gaialive, that was cool.
Might I suggest random rotationals of all of the above? Then slipping in a new one is as easy as adding it to the stack. Let me be honest, that big red button page is getting old. Having random multiples would be fun and exciting. Just PLEASE keep the login box, as Firefox loves it.
I think it would be refreshing to see a new one each time I hit the site, as long as you keep the upper right hand area the same in each.
Again, the gaialive was kick-butt cool, when I saw it, I just sat there and stared in awe, as new users appeared, I wouldn't mind seeing that once inna while. I did actually see most of the list in a course of a few days, I thought it was cool to have a new prelog page every day. Rotation could be every couple hours, meaning you could put a small adspace and let us users RATE and see what we like and don't like, etc.
I would enjoy a rotational every few hours or so, even each day a different one, "Sponsored By: _____" would also allow ya to make money from ads as well as the Cash Cards. Just don't let the ad clients insist on much other than a tiny spotlight. Devs could even parody the ad clients for those with a sense of humor (April '09 was a SCREAM!!!), or make it change from a cookie setting or similar.
Keep up the great work, rotate the intro pages and give us some variety smile
Edit: OR, let us select (cookie setting) which one we want, you could find which one we all like by audits of the cookies...wow...I'm sounding like a coder again, Apologies!