Mission Impossible I 

    - The first of the series, this set the bar.  What an excellent heist in the end.  This movie not only defined what the series should look like, but ended up being the best of the trilogy (more?).  Definitely a good movie. 

Mission Impossible II 

- Utterly odd and a bad movie throughout.  It continued the theme of MI, but John Woo made a mess of this installment.  If you aren't a fan of Mission Impossible, this might not waiver your opinion, but those looking for an amazing MI movie had better look elsewhere. 

Mission Impossible III

  - 2006 - Lost half of a star for not being a good addition to the MI series.  The movie overall was of excellent quality and had a great plot and story.  However, it lacked a certain MI "infiltration" quality.