Your poll has a lack of seasons 1-3, which is when Family Guy was at its best. And the best episode is "Ready, Willing and Disabled"
The one with The Man In The White Coat, and Meg joining his cult. Early season one, i believe. "What is this?" "It's a BOY!"
I have to say road to the multiverse. Some great animation and just entertaining overall without the basic plot of Peter doing something stupid until he learns a lesson and makes up with Louis.
The series finale. In all seriousness, I agree with Omnius' post. Some of the earlier stuff was more than tolerable.
I don't know, the newer stuff has one big thing that seems different to me- Stewie is just gay now (literally) rather then the more mad genius he was in the first few seasons. Other then that it all still seems like that same random humor with an idiot Father doing stupid stuff.
Don't know the actual name of the episode, but the one from the pre-cancellation when Peter creates Petoria.
I have more than one favorite. But I voted for Ocean's 13 and a half just because of the TF reference near the end. Did not see that coming and my mom and sister had to actually come into the room to tell me to shut up. jD001