Microsoft Courts PHP Programmers
Microsoft's new ASP.NET 2.0 training center has something additional -- a PHP Cross-training site. Of course, the site really wants to convince PHP developers that learning ASP.NET in addition to PHP will make them more employable... but it looks like the site runs normal PHP articles as well without the "Hey, use something else!" evangelism, so it could be useful.
(Disclaimer: the O'Reilly Network helps CMP run the site. ONLamp has no other connection to it though.)