Fred Thompson - Apperance on Leno, June 12

Speculation is: will he announce on Leno? ADDENDUM: Looks liek the Press is getting wind of this. Here's an actual article to link to in place of the email rumor I got.

Will former Senator Fred Thompson pull a "Schwarzenegger" and announce his presidential quest during his upcoming appearance on NBC's "Tonight Show With Jay Leno"? Hollywood is abuzz with talk that Thompson will do just that when he joins Leno on June 12.

[The Rest of the Story]

So far, the former Senator from Tennessee and star of TV's "Law & Order" has played hard to get, and won't say if he will throw his hat in the ring for the GOP nomination. Another source, close to Thompson, explicitly denies the Senator will make any announcement when he appears on Leno's show.

But, if Thompson changes his mind at the last minute and does use the Tonight Show as his political jump pad, it won't be the first time this has happened. Back in 2003, after heatedly denying he would ever run for governor of California, Arnold Schwarzenegger did an abrupt about-face and stunned Leno his audience with his gubernatorial announcement. The late night kick-off was great for Schwarzenegger and Leno – who wrangled his best "Tonight" show Wednesday ratings in four years.

Courtesy of Newsmax(Originally in an email from a friend)

Personally, I don't believe it will be there that he announces - but I do bet he drops some BIG hints.