Speaking at a user group is a bit different from speaking at a conference or other event. Because you know the folks there personally (hi Ken, Chris, and all ;-), you can ask around and "do requests", rather than just do what's interesting to you at the time. This one's a request.
On December 8, I'll be speaking at the Portland Oregon, SQL Server user group on parameterization. On-client, autoparameterization-on server, how query plans are affected, especially WRT parameter-sniffing. And what you can do about it, as a programmer or DBA. Details at user group website. See you there.