This is a quick little gem from Dave on setting up a Global Tempo track with a variable tempo using the Beat Mapping tool and tapping in a tempo. It really only takes him two minutes to explain, and he makes it sound perfectly easy, mainly because it is.
Enjoy!
http://youtube.com/watch?v=WSBfq2Yk0Ec
The SFLogicNinja is David Earl, music composer and instructor of Logic Audio and The Art Of Re-Mix at the Pyramid Institute for Advanced Digital Audio Training. Find them on the web at www.pyramid.com