Variety reports on ABC's urging its viewers to conserve gas by staying indoors the week of Sept. 21 -- it's "National Stay at Home Week." The Walt Disney Co. broadcast network's marketing team dreamed up the holiday as a way to promote the start of the season. The promo spots and companion website take a tongue-in-cheek approach to the whole idea that audiences can save money and help the environment by staying home that week and watching TV instead. ABC also unveiled its first network branding campaign in several years (since its famed "Yellow" spots earlier this decade). New spots tout ABC's primetime, news, latenight and daytime blocks, combined with its "Start here" tagline and a remix of the Earth, Wind & Fire tune "September."