Baby Boom (1987)

Baby Boom is one of the 80s remaining treasures. Diane Keaton is wonderful as the advertising executive who finds herself the parent to an absolutely adorable little girl and she carries this huge box office hit (as well as two babies playing the one). It's simplistic and endearing and almost a throwback to the idealistic flicks of Frank Capra - but not quite.

...Manhattan Murder Mystery (1993)

Diane Keaton returned to the Woody Allen fold (during a particularly nasty time for the auteur) to act in Manhattan Murder Mystery, an amusing but slight mystery. The four leads (Allen, Keaton, Alan Alda, Angelica Huston) have nice chemistry, the titular story is not easily solved and, at times, tres amusent. Although the film is indelibly marred by it's historical context, it looks and feels like the film Allen needed to make during this time.