1. State Alchemists vs Seven Homunculi 
A 10 minute film featuring: Ed, Al, Mustang and many other members of the State doing battle with the deadly Homonculi in an alternate reality Amestris. 
2. Chibi Party (Enkai-hen) 
Short 6 minute Skit drawn in Super Deformed style where every character in the series (including bad guys) are celebrating an "After Party" of the Conqueror of Shambala movie. 
3. Kids (Kodomo-hen) 
Short 3 minute story which features Edward and his grankids in present day 2005.
 
(Source: Anime News Network)

Fullmetal Alchemist: Premium OVA Collection