This past trip in January was quite chilly (it remained it the low 50's almost the entire trip) and it was very busy for January as well (we went toward the end of January). The past January's I had been had not been that crowded. We were in the Emporium doing some shopping and it was very busy. A man walked by and said to his wife "Whoever came up with the idea of global warming must have also come up with the idea of the bad economy - because here in Disney World neither of them is true!".
Also another good one, I was on a solo trip in May 05, I was walking down Main Street and there was a little boy in front of me walking with his mom and he said "Mommy do you know what the best part about Disney World is?" and she said "What?". The little boy responded "We get to walk in the streets without cars and trucks running us over!".