Jackass 2.5 is just the xtra stuff from jackass number 2. The jackass guys shot enough film for 2 movies. so, u could say its a new one. Get the DVD and enjoy, i got it and loved it. When the jackass Guys made "Jackass 2", they ended up making two films worth of footage. The new Jackass film is currently in production, called Jackass 3.