Absolutely PHENOMENAL episode!!!!! Loved it, loved it, loved it!
The "we should kiss" comment was way out there. It looked like Monk's look to Natalie after she said it was similar in "Bank" episode when he told her "I don't banter."
I'm still not very good at figuring out how the murderer did it, but once I see it, I'm like "okay, I see it now." This episode, I couldn't even venture a guess. After Strathairn said something like the rook and something else switch places, a light bulb came on, but it was so dim. I knew that was the key, but couldn't figure it out.
I loved how Natalie fooled Monk at the end. I did that to my mom one time while in grade school. I got a bad grade on a test and my teacher's rule was the parent had to sign the test to know what is going on. Well, I asked my mom one day if I could have her autograph. She gave it to me, then I traced her autograph onto my test.

Aren't I sneaky? Wait, don't tell her I said that.
Great job, everyone involved with Monk. By the way, I saw in the list of guests on the show in the beginning, there was a "Sarah Shalhoub" then another last name; started with an L. Shalhoub isn't a very common name so I suppose it's a relation to Tony. Does anyone know what relation and who she played?
And looking at the preview to next week, I already can't wait. Monk says to Dr. Bell: "A talking monkey could do her job." Dr. Bell: "You're holding it upside down Adrian. It's supposed to be 91." Ha!!