...but still worth a look-see. I, too, only saw it for the first time recently, based on a friend's glowing recommendation, and I have to say that, for the most part, it didn't live up to my friend's hype. George Segal is the best thing in the whole movie, a true master of the comedic slow-burn. Ruth Gordon, and I realize she has plenty of fans, is given little more to do than just spout "Where's Poppa?" all the time, which gets a bit annoying after awhile (although her best single scene is when she accosts her son--Segal--at the dinner table in front of his date).
I suppose my one real complaint is that the movie lacks heart, which may actually be a plus, depending on your comedic tastes--this is one mean-spirited movie, even for today's audiences. Certainly not for everybody, and DEFINITELY un-P.C., but it's got just enough laughs to warrant at least one viewing. I will admit, the best sequence of the whole film is the Rob Reiner/Bernard Hughes courtroom scene, which had me laughing out loud and is arguably the least politically correct bit in the movie (next to the black muggers in Central Park, of course).
One note: See if you can find a newer print, if it's available--the VHS copy that I saw had a HORRIBLE transfer.