If my calculations are correct, 165 as of March 11th 2012
304 episodes
21
You can watch Family Guy episodes on NETFLIX and the Family Guy website.
No, Joey Slotnik has never voiced main characters on Family Guy, he has appeared in 8 episodes though.
One of the most popular places to watch Family Guy episodes online for free is Hulu. Additionally, the AdultSwim and ABC websites have many episodes.
Find Family Guy Episodes, on Hulu, Tbs, video.adultswim, be aware that this might be a small selection. The best place to find a bunch of Family Guy Episodes would be Netflix.
3 so far
The three episodes that were a parody of Star Wars which appeared in Family Guy were called 'Blue Harvest', 'It's a trap!' and 'Something, Something, Something, Dark'.
Yes, he has appeared in several episodes. It appeared he was killed off in the Season 9 opener but it has been reported he will be returning.
The character "Jesus" has featured in several episodes of Family Guy. "I Dream of Jesus" in the seventh season of Family Guy was centered around Jesus while other episodes include "Chitty Chitty Death Bang", "Brian the Bachelor" and "Stewie Loves Lois".
On www.hulu.com, you can watch many shows and/or clips for free. I've included a link below that goes directly to Family Guy episodes. http://www.hulu.com/videos/search?query=Family+Guy
One can one Family Guy episodes on television. The Fox channel often times plays episodes. Additionally, Cartoon Network plays episodes during Adult Swim at night.