Watch a panel discussion at the ABA's webiste of the following Solicitors General -- those brave souls who took to court in morning coats:
Edwin Kneedler
Acting U.S. Solicitor General 2009
Gregory Garre
U.S. Solicitor General 2008-2009
Drew Days III
U.S. Solicitor General 1993-1996
Kenneth Starr
U.S. Solicitor General 1989-1993
Charles Fried
U.S. Solicitor General 1985-1989
(h/t How Appealing)