Send me your WPF performance problems!

I'm working on an article for next week where I walk through a WPF performance profile using Visual Studio 2005.  The problem is, I don't have anything to profile!  Sure I can make something up myself, but I'd much rather walk through something sent in by you. 

Assuming I get more than one entry, I'm going to choose the *lucky* winner on Tuesday.  So make sure and send me your profile before then.  Happy profiling!