Inside a San Francisco courtroom today, and after hearing 12 days of testimony in January, U.S. District Judge Vaughn Walker will hear closing arguments in the historic Proposition 8 case over the constitutionality of the state's gay marriage ban. According to reports, "Last week, he gave lawyers on both sides a list of 39 questions he expects them to address during Wednesday's hearing."

Meanwhile, audience members in today's closing arguments "will include a small troupe of Hollywood actors preparing for a YouTube performance," one that will reenact the courtroom drama since cameras were barred from recording the real-life legal drama. The re-enactment is part of MarriageTrial.com, where a large cast of "42 volunteer actors in the roles of Walker, the two couples, witnesses and attorneys have replayed the entire trial for posting on the Internet, using publicly available transcripts of the trial as their script."

If you'd like to follow the case, which starts at 10 a.m., JustMarriedUs (i.e., Frankie Frankeny and SFist style editor Chloe Harris) are at the courthouse live tweeting. You can follow them at twitter.com/justmarriedus.

You can also try this list of everyone who used Twitter before during the trial.