UFC 78: Validation was a mixed martial arts event held by the Ultimate Fighting Championship (UFC), that took place on November 17, 2007 at the Prudential Center in Newark, New Jersey. Validation was the first UFC event held in New Jersey since June 4, 2005's UFC 53: Heavy Hitters in Atlantic City. The main event featured TUF 2 Heavyweight winner Rashad Evans against TUF 3 Light Heavyweight winner Michael Bisping in a light heavyweight contest.
| Actor | Role |
|---|---|
 Rashad EvansSelf | Self |
 Michael BispingSelf | Self |
 Thiago SilvaSelf | Self |
 Houston AlexanderSelf | Self |
 Karo ParisyanSelf | Self |
 Ryo ChonanSelf | Self |
 Ed HermanSelf | Self |
 Joe DoerksenSelf | Self |
 Frankie EdgarSelf | Self |
 Spencer FisherSelf | Self |
 Thiago AlvesSelf | Self |
 Chris LytleSelf | Self |
 Joe LauzonSelf | Self |
 Jason ReinhardtSelf | Self |
 Marcus AurelioSelf | Self |
| LLuke CaudilloSelf | Self |
 Akihiro GonoSelf | Self |
 Tamdan McCrorySelf | Self |