Never seen the movie, but I definitely heard about their FROZEN HOT CHOCOLATE FOR TWO here (from Yelp! of coarse).
My friend and I were newbies to this place, even though we've been to Vegas a bunch of times. When we got here (20 minutes before it closed), we got seated right away. As I was walking to our table, I didn't know that they sold burgers and fries. They did look good, but that wasn't what I came for. Side note -- We were stuft from our dinner at Carnevino and I skipped their desert menu on purpose so I can go to Serendipity. Anyway, I didn't have to look at their huge menu. I just ordered the frozen hot chocolate for two, which came out quickly. I took a sip of it from the straw and it hit the spot!! TIP -- Sip slowly to avoid a temporary brain freeze.