I went and saw it yesterday and it was one of the best films I've seen in quite a while. I rewatched Toy Story 2 a few days ago (It was on BBC1, so I recorded it with Sky+) twice to get me back in the swing with the films, but I didn't really need to. Toy Story 3 reminds you of all of the things you need to remember when watching it and is generally just an exceptional film. And yes, I almost cried at the end, but held back the tears because I was with a group of friends. >.<
If you're asking for effects where it seems as if the characters and objects are coming out of the screen then apparently you're talking about 4D effects. I had the same moan to my friends about the lack of 3D in the movie, but apparently 3D just gives the screen a bit more depth.