Connie Willis does great stuff with screwball comedies - she writes about her love for the genre in her fantastic anthology The Winds of Marble Arch. (A book everyone should read.) Here's a bit:

What I love about them (besides the fact that they occasionally seem to mirror my own life) is that they manage to be inventive and fun within a highly-structured form. They're like sonnets, sort of, with happy endings and I only wish there were more of them.

She sites classics like Father Goose, His Girl Friday and My Favorite Wife as well as While You Were Sleeping (sigh) and Notting Hill.

What you have in her latest novella, All Seated on the Ground, is not only the best elements of screwball comedy but aliens as well. It seems aliens have finally arrived on earth but rather than imparting great wisdom (thank you Vulcans) or trying to kill us (pretty much everybody else) they just stand around and look at us. There is a major communication issue between them and us and what starts out be a very big deal eventually just becomes something annoying and tedious.

I mean yeah, aliens are among us but they aren't doing anything! So what now?

The story unfolds as Meg, a journalist who has written a few alien encounter columns, finds herself on the national commission to figure out how to get the visitors to talk. (By the time they get down to people like Meg on the commission all the bigwigs have come, gotten very bored and frustrated, and gone.) She notices something unusual while escorting the aliens through the local mall during a Christmas pageant and finds herself with a choir director who also realizes what is going on. As the two of them work on the communication issue from a new angle (all the while trying to deal with the insanity of Meg's fellow commission members), they discover that most holiday (they try songs other than strictly Christian) carols have some pretty violent lyrics (this is Willis in all her glory - it's true but stupendously funny). How to find a truly innocuous and peaceful holiday song? It's not as easy as you would think and prompts all sorts of witty conversation (that stellar screwball comedy banter) in which Willis delights.

If you like Bellwether or the short stories "Chance" and "At the Rialto" you will really love Seated. But mostly if you like Willis you should read it and yes - the JK Potter cover really is that stunning.