Special guest appearance

Special guest appearance is a casting designation, reserved for big name actors or previous cast members. It is similar to, but used far less often than Special Guest Star. Special guest appearances are payed on a higher scale than guest stars, and Special Guest Stars.

So far only two actors have received this billing, Dennis Haysbert in Season 4 and 5 and Jon Voight in 24: Redemption and Season 7. Special guest appearance is always the final credit of the cast before the production credits.