People Places Things: http://www.rottentomatoes.com/m/people_places_things/
Will is a graphic artist and teacher. During their twin daughter's fifth birthday party he finds (I assume) his wife upstairs having sex with one of the party guests. This destroys their relationship but it takes about a year for the dust to settle and for both of them to move on. The kids are charming and the two fight scenes these guys have are more realistic than any I've seen in any movie. Don't worry. It's a comedy. Will finds someone better.
This was written and directed by James C. Strouse and it was done so well I plan to look for more of his movies.
Score: 10/10