It's Friday, and on Fridays I usually try to dig up a cool article or two from the community
1) Patrick Tisseghem wrote a beautiful walkthrough on making browser forms show up in a web part - no code required, just follow the screenshots.
2) S.Y.M. Wong-A-Ton published a very detailed paper on saving InfoPath forms to a SQL Server 2005 XML column. This is a very cool integration scenario that enables powerful data analysis using XQuery, and even crazy things like joins between your XML form data and LOB data stored in a relational system. Be sure to check it out!