Here is a partial list of talks on Ajax at AJAXWorld Conference and Expo given by people involved in OpenAjax Alliance: (Sorry if I left anyone off)

• Using “Eclipse AJAX Tooling to Develop AJAX Applications” – Robert Goodman (IBM)
• “Web Usability in the Enterprise” – Andre Charland (Nitobi)
• “Presentation & Demo by Nexaweb” – Coach Wei (Nexaweb)
• “Presentation & Demo by JackBe” – Luis Derechin (Jackbe)
• “Enterprise AJAX Using Java” – Greg Murray (Sun)
• “Laszlo Overview: Ajax, RIA, Web 2.0, Open Source, and More” – David Temkin (Laszlo)
• “Presentation & Demo by Oracle: The Face of Enterprise 2.0″ – Ric Smith (Oracle)
• “AJAX RIAs and the Service-Oriented Platform” – Kevin Hakman (TIBCO)
• “OpenAjax Alliance: Driving AJAX Standards and Interoperability” – Jon Ferraiolo (IBM)
• “Beyond the Buzz Words: Real-World AJAX Success Stories” – Kent Libbey (Laszlo)
• “Presentation & Demo by Laszlo Systems” – David Temkin (Laszlo)
• “Presentation & Demo by ICEsoft: Secure Enterprise AJAX with ICEfaces” – Stephen Maryka (ICEsoft)
• “Web Vector Graphics & Dojo: Draw This!” – Dylan Schiemann (Dojo/Sitepen)
• “How and Why PHP Makes a Successful Back End for Web 2.0 & AJAX” – Andi Gutmans (Zend)
• “AJAX In Enterprise Applications” – Seshubabu Simhadri (Global Computer Enterprises)
• “Presentation & Demo by Helmi Technologies: RIA/AJAX Architectures – Scalability, Responsiveness, End User Experience, Common Bottlenecks and Best Practices” – Juho Risku (Helmi Technologies)
• “The A in SOA Should Be ‘AJAX’” – John Crupi (Jackbe)
• “Presentation & Demo by TIBCO” – Kevin Hakman (TIBCO)
• “Encapsulating AJAX Functionality in JavaServer Faces Components” – Craig McClanahan (Sun)
• “Visual AJAX – Combining Open Source Projects to Achieve Ease-of-Development” – Coach Wei (Nexaweb)
• “Effective AJAX for Everyone Including the Enterprise” – Joshua Gertzen (Custom Credit Systems)