Midnight Spank (formerly 'G4 Late Nights' and Barbed Wire Biscuit) was the former name of a late-night block shown on G4. This block was originally based on G4's recent venture to Williams Street Studios, pioneers of the Adult Swim block on Cartoon Network. G4 Late Nights was made originally to offer the similar content like that of Adult Swim. The block offered syndicated content targeted towards the 18-25 male demographic. Midnight Spank aired mostly acquired programming, with occasional original programming.
Midnight Spank premiered on May 8, 2006 at 12am on G4. The block was discontinued by mid-2008, and encores of G4's primetime schedule aired in the timeslot.
- Brainiac: Science Abuse
- Ninja Warrior (repeats of previously aired seasons)
- Cheaters (moved to G4's "Junk Food TV" block)
- Cinematech: Nocturnal Emissions
- Wired For Sex
- Code Monkeys
- Anime Unleashed
- The Block
- Ed the Sock's Night Party
- G4's Late Night Peep Show
- Happy Tree Friends
- Racer Max Warner's Slender in NukeTown
- Happy Tree Friends and Friends (morphed into G4's Late Night Peep Show)