According to the World Meteorological Organization, Three names from the 2008 Atlantic Hurricane Season have been retired and will never be used again.
The Names retired are as follows:
(2008) Gustav---(2014) Gonzalo
(2008) Ike---(2014) Isaias
(2008) Paloma---(2014) Paulette
IMO, I am surprised that Fay didn't get retired at all.
A review of the 2008 Hurricane Season can be found
here.