Speaking of Family Guy - here's a clip from one of the more recent Family Guy episodes I saw and thought it was pretty funny.

http://www.youtube.com/watch?v=Q2gF6ZHDJB4

If that doesn't work, try this next link because some of the videos will get turned off due to copyright violations :(.

http://www.youtube.com/results?search_query=family+guy+alien&search=Search

Enjoy!