If you're a Lucille Ball fan and want to see a bit of her dramatic range (even though this is a screwball comedy--kind of), this is a great little film that shows off more of her depth. I was incredibly impressed, being only familiar with her TV shows and comedy movies like Fancy Pants, Yours Mine, etc., and the pretty bad Desi/Lucy movies. It helps that this film is actually very well written--although it does, as the other commentator on this board points out, have a "sloppy" ending. Still, the dialogue is witty and intelligent, especially the lines slung by Ball's "mother," and Ball herself gets to do more than just character impressions--which she gets to do as well, and here you'll see the early Lucy Ricardo shining through in all her comedic glory.
Review of You Can't Fool Your Wife
