Shark Tank

'There are so many bad things about this'

'There are so many bad things about this'
'There are so many bad things about this'   

With no sales and no patent, Mary Ellen has a hard time convincing the sharks that a sticky note holder is worth $500,000.

Tuesdays have more bite with back-to-back episodes of "Shark Tank" on CNBC every Tuesday night at 8 p.m. & 9 p.m. ET/PT.

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Meet the Sharks

  • Mark is the highly successful entrepreneur and investor who founded HDNet, Broadcast.com and MicroSolutions.

  • Barbara Corcoran parlayed a $1,000 loan into a five-billion-dollar real estate business.

  • Lori Greiner started with one idea and turned it into a multi-million dollar international brand.