Just saw promo for Mega Builders on Discovery Channel (I recorded mythbusters, and the promo was on during that). It started at 10:30, but there is another episode on at 4:30am, 11:30am and 5:30pm. Discovery Channel Digital 610. Roller Coaster: The Longest, Fastest and Tallest flying roller coaster opened in Spring 2006 at Six Flags Magic Mountain, just north of Los Angeles.

Watched it last night. Good show Watching management stress out when they couldn't meet their unrealistic deadlines was quite entertaining