The One With The Video Tape - S8-E4
Visible crew/equipment: While Ross is talking into Joey's video camera, just as Rachel startles him and walks into the apartment we can see the holes in the walls of both apartments, 19 and 20.
The One With The Video Tape - S8-E4
Visible crew/equipment: After Rachel puts the videotape in the VCR, when she uses the remote to hit play it cuts to a closeup of the TV, and before the tape starts playing we can see the reflection of the camera dolly and a crew member wearing a white shirt, kneeling on the floor.
Answer: The painting doesn't have a name, and if it does it is never mentioned in this episode.