Could Tiger Woods make an appearance at the trial of Joe Halderman, the T.V. producer who allegedly extorted David Letterman? Well, not in person, but perhaps in spirit: In court papers filed on Tuesday, Halderman’s lawyer said that Tiger allegedly paid his mistresses millions to keep quiet, and that, since the woman in the Letterman case hasn’t been charged with a crime, Halderman shouldn’t be either. "Evidence of celebrity misdeeds has a significant fair market value," the lawyer wrote. He says Halderman, who stands accused of demanding $2 million in hush money from Letterman, was simply trying to sell his “very marketable story” to Letterman, with an agreement to keep it confidential as part of the deal.