Expansion Times (years ago):
Africa	120,000 - 150,000
Out of Africa	55,000 - 75,000
Asia	40,000 - 70,000
Australia/PNG	40,000 - 60,000
Europe	35,000 - 50,000
Americas	15,000 - 35,000
Na-Dene/Esk/Aleuts	8,000 - 10,000

Links:
Human Migration
FamilyTreeDNA.com
Y-Chromosome Nomenclature System - Abstract "A Nomenclature System for the Tree of Human Y-Chromosomal Binary Haplogroups"
Y-Chromosome Haplogroups