I suppose I should give at least ONE hint:
two of the movies came out the same year.
Doug | Homepage | 11.01.09 - 7:56 pm | #

Hmm ... none of these look vaguely familiar, but is #3 some early version of "The Odd Couple"?

#4 looks like "Easy Rider" era ... maybe "Deliverance"?
James | 11.02.09 - 5:20 pm | #

James, textual communication limits my ability to know if you are joking, or just young.
What you call #3 came out the same year as the movie on top...and I was six years old.
#4 (as you call it) won a slew of Oscars a few years before I was born.
Have fun.
Doug @work | 11.02.09 - 9:43 pm | #