The One With Rachel's Crush - S4-E13
Visible crew/equipment: When Rachel comes in at the start of the episode a stage light is reflected in the TV. (00:02:05)
The One With Rachel's Crush - S4-E13
Visible crew/equipment: When Monica is wafting the smell of cookies to the other in the big apartment, there is a shot of Monica, and all the stage lights are reflected in the TV screen. (00:09:55)
Answer: The painting doesn't have a name, and if it does it is never mentioned in this episode.