Charlie Crist will be listed ninth (i.e, last) on the November 2008 ballot for the U.S. Senate race in Florida. See this CNN story. Florida lists the nominee of the party that won the governorship first. It lists any other party that has registration of 5% of the voters next. It lists the nominees of other parties next. Finally, at the bottom, are the independent candidates, listed in the order in which they filed. Besides Crist, four other independent candidates filed.
Of course, Crist or any other candidate is free to sue over the ballot order. In 2007 the New Hampshire Supreme Court ruled unanimously that the all candidates must have an equal opportunity for the first line on the ballot. Other courts that have made similar decisions are the California Supreme Court, and the 8th circuit, and U.S. District Court decisions in Oklahoma and New Mexico.