
One of my favorite things that
Reno 911! does is to weave in guest stars with little or no fanfare, and to just let them mix it up with the cast. I smile every time I see Patton Oswalt as a role-playing geek running, in full chainmail, from Dangle & Co. Or Paul Rudd as a Lamaze coach. Or Cheryl Hines as trailer trash (there has been a lot of trailer trash).
It's never a big deal, it's never announced to promote the show. It's just people who are good at what they do goofing off and having a lot of fun, which is what the rest of the cast is doing anyway.
Looks like the new season, which premieres Wednesday at 10:30PM, will continue that tradition. Here's a bit with Jonah Hill, uncensored.

There aren't many actresses out there that you could affectionately call a "broad," but Megan Mullally's one of them. Ever since she came on the scene a decade ago as the caustic and spoiled Karen Walker on
Will & Grace, Mullally has shown that she can be bawdy with the best of them.
Now, after a foray into the talk show world and a turn as a disabled and ugly -- but desirable -- chief of medicine on Rob Corddry's web series
Children's Hospital, Mullally is back on series TV, on ABC's new comedy
In The Motherhood (premiering Thursday at 8 PM ET), which was based on a
web series that took episode ideas from submissions by real moms. In the series, Mullally plays Rosemary, a "bad ass," as Mullally calls her, who has raised the perfect son even though she's an imperfect mom.
In this quickie interview, Mullally talks about the new show, about a rumor that she was in a catfight with her co-star Cheryl Hines, about how Rosemary and Karen could be the new Odd Couple, and running her Kerry Weaver-esque
Children's Hospital character past Laura Innes.