There are about 6300 results on Google for "welcome to earf"
http://www.google.com/search?q="welcome+to+earf" which people are claiming is what Will Smith said in Independence Day. This is despite the fact that in the movie he clearly articulated the 'th' at the end of Earth.
How did this start and get so widespread? It seems a little weird since Will Smith and other actors did plenty of dumb stuff in that movie to make fun of.
The Office Seagon 6 episode "Body Language"
Darryl: "That sounds alright"
Dwight: "It sounds a lot better than just 'aight.'"
Darryl: "I didn't say 'aight.'"