Season 5 contained 18 episodes not 20 so this question obviously cannot be answered.
season 1 episode 13 escobar gallardo soundtrack
Season 8|Episode 16 April in Quahog
Season 8|Episode 10 Big Man on Hippocampus
Season 3, episode 21: "Family Guy Viewer Mail #1"
Season 7, Episode 3: Road to Germany
10th episode of season 3 (54th overall episode).
Season 10, disc 2, episode 5
Season 2:Episode 8-I am Peter Hear Me Roar.
It is called "Play it again, Brian" and is season 6 episode 10
It seems today that all we see, is violence in movies and sex on tv But where are those good old fashioned values on which we used to rely? Lucky there's a family guy Lucky there's a man who, positively can do, all the things that make us laugh and cry He's a family guy!
Season Two|Episode Twenty Wasted Talent
Season 6, episode 2 The episode called Shiny Happy People