Aaron Hoover was kind enough to webcam the Summit sessions he attended, and he’s posted the videos on YouTube. URLs, from Aaron’s channel, are below.
Just Enough Admin - Security in a Post-Snowden World - Jeffrey Snover - PowerShell Summit 2014

Windows System Internals with PowerShell - Adam Driscoll - PowerShell Summit 2014

PowerCLI: How to Automate Your VMWare Environment Reports - Matt Griffin - PowerShell Summit 2014

Parallel Execution with PowerShell - Tome Tanasovski - PowerShell Summit 2014

PowerShell for Security Incident Response - Lee Holmes and Joe Bialek - PowerShell Summit 2014

Leverage Multi-Threading for Speeding Up Your Scripts - Jason Walker - PowerShell Summit 2014

Advanced PowerShell Eventing Scripting Techniques - Matt Graeber - PowerShell Summit 2014

Using PowerShell as a Reverse Engineering Tool - Matt Graeber - PowerShell Summit 2014

On the Job: Putting PowerShell Scheduled Jobs to Work - Jeff Hicks - PowerShell Summit 2014

The Seven Secrets of CIM - Brian Wilhite - PowerShell Summit 2014

WSMan Cmdlets - Richard Siddaway - PowerShell Summit 2014

Networking Administration with PowerShell - Richard Siddaway - PowerShell Summit 2014

Kerberos Delegation, CredSSP, and Windows PowerShell - Aleksandar Nikolic - PowerShell Summit 2014

The Joy of Intellisense: Tab Expansion - James O’Neill - PowerShell Summit 2014

Trending and Reporting - Don Jones - PowerShell Summit 2014

Leveraging Web Services with PowerShell - Trond Hindenes - PowerShell Summit 2014

Monitoring Using PowerShell - Josh Swenson - PowerShell Summit 2014

Cmdlet-ize the Registry - Richard Siddaway - PowerShell Summit 2014

PowerShell Module Design Rules (and When to Bend Them) - Kirk Freiheit - PowerShell Summit 2014