I'll be speaking at the Dallas C# User Group on February 1st on behalf of INETA and Interface Technical Training.  The topic I'll be discussing is Async Web Services in .NET 2.0 which includes a discussion of the pros and cons of async calls as well as several different techniques that can be used from callbacks and waithandles to the new event driven model.  If you're in the Dallas area and are interested in learning different techniques for calling Web Services asynchronously swing on by.

Update:

Thanks to everyone that attended my talk last night.  Although it snowed in Dallas there was a nice turn out.  I had a great time and met a lot of cool people as well.  Thanks to Jef Newsom for arranging for me to come (and for dinner :-)).  I promised everyone I'd make the slides and code available so here they are:

http://www.xmlforasp.net/codebank/download/blog/asynchronouswebservices.zip