Slime Across America is a summer Nickeloeon programming block, airing Monday through Thursday from 5:00PM to 7:00PM, during the middle of 2007. It is hosted by Ryan Willard and Mark Keller, and features Lily Collins and Pick Boy. On Fridays, the block becomes Slimeball, which also airs from 5:00PM to 7:00PM. Slime Across America features an 18-wheel "Slime Mobile", traveling across the United States to select cities, in which the show is hosted. The block includes slime games, celebrity chats, and is very similar to an earlier Nickelodeon block, Slime Time Live. The block stopped airing on Nick in mid-August 2007, and it is unknown if it will return in 2008.