Now, this is how you do 'Black Comedy' well
*Spoilers*
This is a perfectly orchestrated "Black Comedy", with one of the best ensemble casts I've ever seen - "best" because these actors play-off eachother so perfectly, that the veil of obliviousness across characters is uniform and they never drop the joke. Each character is so endearingly absurd and their respective logic perfectly expressed, that you're able to suspend judgement and see the justifications for their individual choices and behavior and how a series of events unfolds; this generates an emotional connection between characters and the audience, one that's very important to maintain in this kind of comedy. If a director loses this continuuity across characters - this equality of perspective - people start to lose sympathy and the laughter feels all wrong. How funny can the story of a wife who is, unsuccessfully, trying to kill her husband, be?
Very. You have Kevin Kline flamboyantly showcasing a hokey stereotype to perfection, playing to a series of wonderful, comedic actresses, all taking cameos as his ditzy or unaware conquests (I'll leave those as a surprise). You have the seriousness of Joan Plowright as a mother-in-law who obviously never liked the rascal her daughter married, reminding a dreamy, alterna-hippie pizza boy, played by River Phoenix, to get the best deal in his hitman negotiations. You have William Hurt, playing the lead man in a dingbat duo between two pothead losers being hired as hitmen, the other in the team excellently played by Keanu Reeves (any question of his skill is resolved, here; it takes actual, conscious planning, to play a doofy stonehead burn-out, to such utter perfection.) And you have Tracey Ullman, generating genuine sympathy and total believability as the wife-done-wrong.
The script is hilarious, the subtle ways the actors interact and the little character directions (for example: River's character, seriously fussing over runes, pulling himself aside to pull himself together; Keanu's character, attempting to listen to a "plan" and occasionally slipping out of the conversation to drift off, only to be pulled back into it by William Hurt's character; Joan Plowright expressing her anger and dissapointment to Kevin Kline's, even after it's been revealed she was part of a plot to kill him, the way Kevin Kline's character justifies his actions) are great. I'm surprised this film only got a mediocre critical response because it's really such an excellent, black comedy. I thought it was hilarious.