michael keaton be johnny dangerously in this take off on gangster movie do in 1984. maureen stapleton play his sickly mother and griffin dunne be his da brother and peter boyle be his bos and and marilu henner be his girlfriend . other star include danny devito and joe piscopo . keaton play a pet store owner in the 1930s who catch a kid steal a puppy and then tell him and in flashback and how he come to own the pet store . he turn to thievery at a young age to get his mother a pancreas operation ( $ 49 . 95 and special this week ) and begin work for a mob bos ( boyle ) . johnny use the last name dangerously in the mobster world . there be some hilarious scene in this film and and stapleton be a riot a johnny foul mouth mother who need ever organ in her body replace . peter boyle a johnny bos give a very funny performance and a do griffin dunne and a straight arrow da who would not play ball with crooked burr ( danny de vito ) . a johnny nemesis and joe piscopo be great . richard dimitri be a standout a moronie and who torture the english language but you have to hear him do it rather than read about it . what make it funny be that he do it all with an angry face . the movie get a little tired toward the end and but it well worth see and and keaton be terrific a good boy or bad boy johnny . for some reason and this film be underrate when it be release and and like keaton other gem and night shift and you do not hear much about it today . with some performance and scene that be real gem and you will find johnny dangerously immensely enjoyable .