Florida Gov. Charlie Crist's pick of George LeMieux to succeed retired Sen. Mel Martinez (R-FL) means the U.S. Senate will have five members who took their seats through appointment. A possible sixth appointment could happen if Massachusetts changes the law to allow an interim appointment to fill the vacancy left by Sen. Ted Kennedy's death.
Washington Post: "The largest such group took office as part of the Congress that wrapped
up World War II, covering 1945 and 1946, when 13 senators were
appointed to their seats. In Dwight D. Eisenhower's first two years as
president, 1953 and 1954, 10 senators were appointed to office."