Last night I watched a Family Guy episode where Peter succeeded in changing the present by going back in time with the assistance of Death.
Peter later attempts to put the present back to the version he’s used to.
At the end of the epsiode, just when we think all is back to normal, Roger the alient shows up on screen and delivers a single line.
Is this the only crossover of a character we’ve seen on FG/AD, or did I just miss the others?
IIRC Roger also appeared in the cantina scene from “Blue Harvest” but I suppose that doesn’t count.
Couple weeks ago, Stewie’s look into a possible future revealed him raiding CIA headquarters and encountering Stan and Patrick Stewart.
This probably doesn’t count, either, but to promote the DVD release of the two shows, Fox had a website setup featuring an online “American Dad vs. Family Guy” Flash fighting game. Just as in the shows, there were some interesting pop culture references- Lois is seen wearing a yellow jumpsuit similar to that worn by The Bride in Kill Bill, one of the stages is a boxing ring where everything is in black-and-white, presumably after Raging Bull, and the final boss is Ryu from Street Fighter II (used under authorization from Capcom).
Man, that was one of the worst Flash games I have ever played. The controls were bad even by cheap Flash game standards.