Gotta love how the GN does it.. they have a 20-team parlay card.. bet $5 to win $1 million. Just call 20 bets correctly. Couple things with that... a $5 bet should pay about $5.3 million instead of $1 million at 50/50 odds on each... but get this... ties lose.
With 20 bets a week, there's a pretty strong chance that one of those games will tie, especilly when they put key numbers on the card (3 for example). In other words, your 20% return (80% expected loss) is closer to 5% return... or in other words, you're giving up 95% of your money wagered.
I like the GN, but it'd be nice if they made it 19 or even 18 (instead of 20) to give a chance to the bet, or at least put half-point lines up on all bets. They'd still have a huge edge.