Fred Wilson to Disrupt Battlefield contender Vurb.

Disrupt Battlefield host offers the judges a hands-on with ISI Technology’s water heater.

Marissa Mayer explains the state of mobile at Yahoo when she started at the company.

Alexia Tsotsis asks Sophia Amoruso about the future of Nasty Gal.

Sophia Amoruso, founder and CEO of Nasty Gal, on what she’s learned.

Michael Arrington discusses CrunchBase with Matt Kaufman.

Leena Rao to guests on the panel “Is Winter Coming? Investing While Valuations Soar”.

John Biggs and Peter Weijmarshausen discuss the present and future of 3D printing.

Biggs explains his place in the 3D printing world in conversation with Peter Weijmarshausen of Shapeways.

Riffing on the ultimate male anatomy joke that Silicon Valley is building to.

Responding to Ryan Lawler‘s question “How many secrets are true?”

Teller on what Google Glass is not intended for.

Technology should work for us without needing us to think about it, says Google’s Captain of Moonshots Astro Teller.

Eric Hippeau on the confluence of media and tech.

Grace Choi, founder of Mink, on the makeup industry.

Rich Miner inquires about the specifics of Mink’s makeup printer.

VICE’s Shane Smith explaining what’s wrong with traditional news reporting.

VICE’s Shane Smith revealing his disgust of traditional journalism.

Oculus VR’s Brendan Iribe poking fun at Google Glass.

TechCrunch’s Alex Wilhelm rhetorically asking Justin Rosenstein about the addiction of mobile games like Candy Crush.

TechCrunch’s Alex Wilhelm questioning the advice Asana’s Justin Rosenstein gave during his keynote.

Asana’s Justin Rosenstein justifying his lifestyle and outlook to TechCrunch’s Alex Wilhelm.

Y Combinator’s Sam Altman dismissing the notion that tech stocks are currently overvalued.

Y Combinator’s Sam Altman explaining why companies lose their early idealism and focus. One issue, he said, is going public.

Birchbox’s Hayley Barna and Katia Beauchamp talking about their company’s explosive growth and impressive ambitions.

Kickstarter’s Yancey Strickler pleading with TechCrunch’s John Biggs to stop spamming everyone about his Indiegogo-launched book.

Union Square Ventures’ Fred Wilson expanding upon what he calls the “the valuation trap,” which apparently sucks people in.