I would advise watching M*A*S*H, but I was always a fan of the seasons that had David Ogden Stiers, aka Winchester. I enjoyed his relationship with BJ and Hawkeye a lot more, because he wasn't just the requisite dick for them to prank. He had depth!
ALSO on semi-regards to topic, there was an Episode of Diagnosis Murder that did include a bunch of M*A*S*H actors, Movie and Show. It had the two gals who played Major Hoolihan in the Movie and TV show, Sally Kellerman and Loretta Swit, It had William Christopher AKA Father Mulcahey in the TV show, and Jamie Farr who played Klinger.
Is it sad that I remember the actor names pretty damn easily? Having to only lookup Sally Kellerman?
Also I own the entire series on DVD, including the Bonus content DVD and am considering getting the Collectors Edition of the series despite it's $200+ price tag?