There are some pretty big names in Newsround's bullying special. Aston from JLS is one the celebs involved.
Former undefeated boxing world champion Joe Calzaghe put away his Strictly shoes to take part.
Like all the famous faces in the programme, EastEnders actress Patsy Palmer talks about her bullying experiences.
Britain's Got Talent champ George Sampson helps out too.
And here's a familiar face to CBBC viewers. Gemma leaps out of Jack's TV to offer him her advice.
But it's not all famous faces. This is Tom who plays the main character in the programme, called Jack. He has a lot to learn during the show.
And this is another of our actors Brandon. He's the unfortunate person being bullied while Jack stands by and lets it happen.