Apparently when Jack Thompson messed with Penny Arcade cartoonist "Gabe", he failed to take into account the site's loyal readers. In one 60+ page thread on the PA forums—which can be found here—readers were sharing their faxes, emails and phone calls to the Florida Bar which called for an investigation into Jack Thompson's practices.
Ars Technica got in touch with the Florida Bar and found that "according to a spokesperson, the letters and faxes have been received and forwarded to the disciplinary committee."
According to a Wikipedia article on the matter, the Florida Bar has "received an overwhelming amount of complaints in the last several days about the issue, and is calling an emergency meeting to deal with the issue." Hopefully Jack's time in the spotlight will be coming to an end very soon.
[Update: Penny-Arcade thread link now working.]