A lot of my customers are asking for a solution to simply view InfoPath forms in the browser without having to have InfoPath installed on their machines. A number of third-party vendors have published some great solutions to help them but no one actually has the SharePoint integration. Well, it is official now, CaveDigital (a Portuguese company based in Lisbon) has released its first version of the XML Form WebPreviewer Web Part. I am very proud to know the people behind the scenes personally (actually, I will visit them tomorrow :-)). They have done a great job and I am pretty sure they have found a niche for their product. If you want to receive a trial version, just contact them.