Eee! Love that Pam brings the jellybeans, the first time Jim calls her Beesly, and all the promise and hope he's feeling, and Dwight being incredibly twisted and perceptive at turns, and the "and her voice is warm" at the end echoing Booze Cruise.
Really, I think it's very true to why Jim likes Pam - not because she's cute, but because she can hold her own in the joking, and be a person that makes sense in the DM weirdness.