For the TAGS snobs who believe the color episodes are blasphemous... you may never appreciate the sheer genius of this episode. There is a reason Andy went out number one in the ratings (one of only three shows to end their run number one in the ratings in television history) and this episode in the final season illustrates why: the magic was still there. I won't bore you with a rehashing of the details but the previous poster is wrong... Howard and his mother didn't "forget"... she said "If Andrew thinks we invited him to dinner then we will serve him dinner. Now go!" It was a very funny scene. I will say if you have ever eaten too much spaghetti then this episode will make a ton of sense. Enjoy!