The One With Chandler In A Box - S4-E8
Continuity mistake: In the scene were Phoebe is calling for Monica's eye doctor, in the background you can see the TV is off. Then Phoebe asks if she wants to see the on call doctor, Monica says yes, and in the background the TV is on. (00:03:55)
The One With Chandler In A Box - S4-E8
Visible crew/equipment: After Joey tells Chandler he's going to his folks and might stay there for a few days while looking for an apartment, just as Joey retrieves his keys from the shelf, a crew member wearing a black shirt and white pants is visible on the left side of the screen. (00:08:40)
The One With Chandler In A Box - S4-E8
Visible crew/equipment: When Chandler is telling the friends the meaning of the box, the camera goes a bit too high and all the stage lights and equipment become visible on the ceiling. (00:12:30)
The One With Chandler In A Box - S4-E8
Revealing mistake: When Chandler is in the box and Ross accidentally places his hand over the 'air-hole' you can see Ross feeling for the hole for a while before he finds it. (00:12:35)
The One With Chandler In A Box - S4-E8
Visible crew/equipment: Just as Ross asks Rachel for the necklace he got her, a stage light is very visible above the bathroom door. (00:12:35)
The One With Chandler In A Box - S4-E8
Continuity mistake: In the episode with Chandler in a box, when Rachel is showing Ross all the things she had kept from their relationship in a shoe box, her hair is tucked behind her ear in most shots, but when she says "I keep the gifts that matter", it's all loose, then goes back to how it was in the following shot. Also in the shot before that line she's pointing the horn fossil's tip at Ross, but when it cuts to a front view she's holding the horn's tip and pointing the broken end. (00:16:30)
The One With Chandler In A Box - S4-E8
Visible crew/equipment: When Chandler is climbing out of the box, you can see the bottom of the set spotlight right above the bathroom door. (00:20:35)
The One With Chandler In A Box - S4-E8
Visible crew/equipment: After Kathy tells Chandler goodbye and leaves Joey lifts the lid from the box, and when Chandler stands up in the box we can see the end of the living room set wall and the pink set wall.
The One With Chandler In A Box - S4-E8
Visible crew/equipment: When Kathy walks in while Chandler's in the box, after Phoebe tells her, "He can't talk right now," in the shot facing Kathy the end of the set wall can be seen, and there's a plastic cup with a straw sitting on a shelf off stage.
The One With Chandler In A Box - S4-E8
Visible crew/equipment: When Monica and Tim are on the balcony, we can see the end of the set wall, as well as studio equipment and lighting, at the left side of the screen.
Answer: The painting doesn't have a name, and if it does it is never mentioned in this episode.