This just came across another list:
Rep. John Conyers of Michigan has asked for a million emails urging the Judiciary Committee to hold full hearings into the Ohio voting irregularities. Conyers hosted a forum on this subject on Dec. 8, 2004, which was attended only by the Democratic members of the Judiciary Committee. He thinks that with a million emails, the Judicial Committee will hold official full hearings on this subject.
Here's the place to email him: