Today, Starpulse's managing editor received an unusual capsule containing a torn turquoise bathing suit, a "swim at your own risk" beach sign, a tooth, a key and, (gulp!) her very own obituary!

From Adam and Jamie to hammerhead and whale sharks, the biggest stars of both land and sea get VIP treatment on Discovery Channel this summer,

Hosted by "Survivorman's" Les Stroud, Shark Week's 20th Anniversary will fill Discovery Channel's total day schedule now through Saturday, August 4, from 9 AM to 3 AM (ET/PT) each day - adding up to over 130 hours of shark programs devoted to the behavior of one of the most mysterious and majestic creatures on the planet.

It's just not summer without "Shark Week." And in 2007, the ultimate must-watch summertime television event is turning 20 - making it cable's longest running event.

Shark Week kicks off on Discovery Channel tonight with Mike Rowe's two-hour special "Dirty Jobs: Jobs That Bite" and ends Friday, August 4, with the one-hour special "Dirty Jobs: Jobs That Bite Harder."

Tagging great whites with satellite devices to track their migration patterns ... testing the strength of chain mail in the middle of a reef shark feeding frenzy ... preparing chum, a mixture of chopped fish parts and blood used to attract sharks -- Shark Week host Mike Rowe (Dirty Jobs) finds out that working with sharks can be extremely dirty work.

Content from the Discovery Channel, TLC, Animal Planet, Travel Channel, Discovery Health Channel and Discovery Kids is now available for purchase at the iTunes Music Store. Popular offerings include episodes from Mythbusters and Shark Week.