I don't have a video of Charlie pulling the gate, but here is one where DH didn't secure the gate (just pushed it against the wall), so Charlie's nose went into action.
I know Charlie makes this look so easy, but all of other dogs were completely perplexed on how he got out. Even after Charlie moved the gate away from the wall, no one else could figure it out. They all stayed in the kitchen and just watched him in the other room.