Judd Apatow’s This Is 40 follows the (mis)adventures of Knocked Up couple Pete (Paul Rudd) and Debbie (Leslie Mann) as they reach the milestone that is 40 years of age, while grappling with common struggles that come with being responsible adults and raising kids. That’s essentially the plot in a nutshell, as the first trailer summarized in a matter of two minutes.

The new trailer for This Is 40 is a compilation of funny exchanges and amusingly awkward moments from the film, such as when Pete and his biking buddy (played by longtime SNL contributor Robert Smigel) fantasize about their wives suddenly passing away peacefully – or pillow talk that culminates with Debbie marveling at how often she’s imagined killing Pete (and how simple it would actually be).

We’re also treated to several appearances from celebrities who, in turn, are either cameoing in This Is 40 or playing side roles in the self-deprecating drama-comedy (heavier on the comedy). That includes Jason Segel, Bridesmaids costars Melissa McCarthy and Chris O’Dowd, Albert Brooks (Drive), John Lithgow, and Megan Fox playing a vapid hottie whose looks leaves neurotic folk around her envious (quite the stretch, we know). This Is 40 also features brief appearances by such comedic performers as Charlyne Yi (Paper Heart), Lena Dunham (Girls), Tim Bagley (Austin Powers), and Suzy Nakamura (Curb Your Enthusiasm).

Expect most of these recognizable-faces to show up onscreen in This Is 40 for only a few (possibly even scene-stealing) minutes, as is common practice for Apatow productions (see: The Five-Year Engagement, for a recent example).

Paul Rudd and Leslie Mann in 'This Is 40'

You’d be forgiven for feeling a little worn out when it comes to Apatow projects, as his name has been featured front and center on the four films he’s produced since directing Funny People in 2009 (Get Him to the Greek, Bridesmaids, Wanderlust, Five-Year Engagement) – and those last two hit theaters within a few months of each other, earlier this year. The same relatable comedy, raunch, and heartfelt drama have been featured each time – with “spices” to add variety (re: different plot concepts and celebrities).

The final results generally range from passable to excellent, with box office returns usually (but not always) reflecting the differences in quality. Apatow’s dramatic sensibilities seem to have improved since Funny People, while his comedy writing comes off as top-notch in trailer footage for This Is 40; so, it should do solid business in theaters, especially since likable leads in Rudd and Mann are headlining the show this time.

This Is 40 opens in U.S. theaters on December 21st, 2012.

Source: Yahoo! Movies