Well, that depends on your understanding of my question.......
Banjo-Kazooie, at the Time of it's original release, was a 2nd party game. But since it's moved to X-Box, it's more like 4th or 5th party, since we probably won't see it on a Nintendo console anytime soon. (The re-releases are 2nd party X-Box games, as far as i know).
Now, to clarify, my question is "What is your Favorite 3rd Party Game that appears on a Nintendo system?" this can be formerly third-party franchises; franchises that were 1st- or 2nd-party, and are now 3rd party.
For this thread, The important thing is: It's on Nintendo Hardware.