Go to ABC's YouTube channel ("ABCNetwork") and look at the clip called "A First Look at Shark Tank!" Or here's the comparable page on ABC.com: Shark Tank - Home - ABC.com
I find this fascinating, because ABC has already DONE this show, with only minor differences, as "American Inventor" (produced by Simon Cowell).
The differences are that "Shark Tank" is less of a contest where they follow through with the testing of the invention, as Cowell's version was, and more about the tycoons aggressively bidding against each other, or conversely, aggressively trashing the idea.
In fact, what "Tank" actually is... is a 100% adaptation of the British show "Dragons' Den" (whereas "American Inventor" was like... a 75% adaptation). This is Mark Burnett's try at what Cowell failed at. It IS slightly odd that Burnett would choose to do a show that Cowell failed with (and even odder that ABC would buy it), but what's most odd of all is that they'd go back to the original British formula (and pay for it... apparently "American Inventor" didn't acknowledge the connection between the shows, despite the fact that the annoying Peter Jones appeared on BOTH shows) but NOT use the British show's original name--which is known to viewers of BBCAmerica Channel, so its got some cache.
Peter Jones thankfully seems absent from this version.