i have watch this movie on a fairly regular basis for most of my life and and it never get old . for all the snide remark and insult ( mostly from david spade ) and tommy boy have a giant heart . and that what keep this movie funny after all these year . tommy callahan ( chris farley ) be the son of big tom callahan ( brian dennehy ) and master car part salesman and and have ride on that all his life . but after his died dy on his wedding day and tommy learns that the company be in debt and and about to be buy by ray zalinsky ( dan akroyd ) and the owner of a huge car part company . so in order to save the company and tommy have to go on the road to sell the company new brake pad . along for the ride and though not by choice and be richard hayden ( david spade ) a former classmate of tommy who be big tom right hand man . the movie rid on the chemistry between the two snl star ( and real life best friend ) chris farley and david spade . the duo have enough comic energy go between them to power the world . it the big and dumb guy versus the smart little guy . it work and and some of their scene be unforgettably funny . farley and spade be actually decent dramatic actor as well . although the film be primarily a comedy and it have it fair share of drama and but spade and especially farley be just as good there a when theyre make the audience laugh . forgive me and but i have to talk about chris farley a little more . i read his biography ( the chris farley show represent a biography in three act and for anyone who care ) and and understand who chris be in real life make this movie more special to me . chris farley be a genuinely good person who struggle and and ultimately fail to conquer his addiction . although this be the first movie he have a major role in and it be his best film . it really show who he be and and just how much talent he have . know chris story add another layer to this movie and although it doesn not make it any less funny . farley and spade be match with a good on screen cast . rob lowe be suitably slimy a tommy new brother and and bo derek be solid a his step mother . brian dennehy be great a big tom . dennehy make it easy to believe that theyre father in son . big tom be just as crazy a his son and although he smart and more mature . dan akroyd give one of his best performance a zalinsky and give tommy the hard truth behind advertising . julie warner be also good a tommy love interest and michelle . for me and peter segal be one of the great comedy director . he keep the pace quick and energetic and but most importantly and he know how to make comedy funny . he doesn not belabor the joke and and he understand that funny actor know what theyre do and he allow them to do it . but segal go a step far . he give tommy boy a friendly and almost nostalgic tone that both tug the heartstrings ( genuinely ) and tickle the funnybone . critic do not like tommy boy . shame on them . a movie doesn not have to be super sophisticated or subversively intellectual to be funny ( god forbid farley and spade be force to do muted comedy a la the office ) . this be a great movie and one of my all time favorite .