If you could walk into any museum and walk off with any painting of your choice,  no questions asked,  what would you grab? ?

Probably  "Starry Night"  by Van Gogh. 

I've always liked it. 

I actually have several smaller versions of it around the house. 

one was a poster for MET LIFE,  that has Snoopy sleeping on his dog house  imposed over Starry Night....like that was the original painting.  

I cut it out and framed it.  I thought it was great. 

there we go........found it......

https://www.google.com/search?q=Snoopy+Starry+Nigh...

I'd take all the painted walls with my favourite paintings

The scream by that french painter, forgot his name.  I don't really know any other paintings. 

John Constable's 'The Leaping Horse'.  

Either Wheatfield with Crows (Van Gogh) or Primavera (Botticelli)

Assuming I could sell it later to the highest bidder without any negative consequences, then the "Mona Lisa" by Da Vinci. It's probably the world's most famous painting and would probably fetch the highest price. If it were just for my own personal enjoyment that would be very hard. Maybe "The Death of General Wolfe" by Benjamin West, though I may well change my mind by tomorrow.  

https://images.app.goo.gl/n4DKSG3gGWAkCm1z7