I don't have Showtime, alas...But Six Feet Under's done that a couple of times, as far back as the first season (which I believe came before DLM, right?)...I think it was the last episode w/ the chick from Krohner golfing, looking like she was going to have a heart attack or something, but she ended up hitting that crazy chick's aunt w/ a stray golf ball. I wasn't sure if you meant the misleading death or the "kick off death" in general, since I've never seen DLM!
But when did New Hampshire become--Such a backward wasteland of seatbelt hating crazies?...I mean, only 40 people actually live there. The others are just visitors who come for the tax-free liquor and three inches of novelty coastline. John Hodgeman on The Daily Show (1-30-07)