HEY, WOMAN! ...BRING YOUR PRETTY LITTLE SELF OVER TO MY APARTMENT TONIGHT, AND I'LL SHOW YOU A REAL MAN: Lou W, in the comments:
I'm pretty damn sure [Toy Story 3 is] the best 3rd movie of a series ever.
Here's a decent top ten threequels list, though I don't see any films listed there which involve Richard Pryor as a zany computer geek. Yeah, I think Lou's right.