The 3rd is probably my favourite. I was skeptical about what they could do to put it on power with the first 2 movies before I saw it, but the story is perfect, and it's a fitting end to the toy story trilogy.
About the grey, I will probably watch it sometime soon because it has Liam neeson in it. I love that man!
My prediction threads:
Wii U will sell under 40m units (made on 14th September 2012)
PS Vita will sell under 20m units (made on 30th September 2012)
Wii U will sell under 7m in 2013 - I was right