This has bothered me for a while, but never bothered me enough to make me figure out how to do it. Until now.
You've created a Form Library in your Windows SharePoint Services or SharePoint Portal server site/area and you want to provide users a link to fill out the form without bringing them to the form library or providing that obnoxious list web part toolbar.
One solution has been to deploy the InfoPath form via MSI. I don't link this option because versioning the form isn't as slick.
Use FrontPage 2003 to edit the page on which you want your hyperlink to appear. Add the form library web part to the page. Right click on it and convert it to an XSL data view. Delete everything but the "Fill Out This Form" toolbar element (including the classes because they will cause the style sheets to apply the toolbar style to the element). Then change the wording of the hyperlink to suit your needs. This approach is useful because I don't have to copy script references or look up guids.