If you already follow my blog, you probably know everything you need to know about Mango's multitasking support... but just in case you don't, you can check out a video I did with Robert Hess over at Channel 9.

http://channel9.msdn.com/Shows/The+Knowledge+Chamber/Peter-Torr-and-Application-Multi-Tasking-on-Windows-Phone-Mango

Thanks Robert!