South Park Easter Egg - VISITORZ!!!

I spotted two aliens in the episodes Bloody mary and Asspen in South Park

1. Bloody Mary: There is a scene about two thirds through the episode where Stan is standing outside of his fathers car as his father sits in the drivers seat. If you look very closely and listen for the line "they say her divine ass-blood..." you should see a visitor on the far right side!!

2. Asspen: This visitor was not as easy to find because it appears for a split second. Within the first five seconds that the boys meet their ski instructor, a visitor quickly skis right behind him. Make sure you are looking closely or you might miss him!