alias gb='for k in `git branch|perl -pe s/^..//`;do echo -e `git show --pretty=format:"%Cblue%cr%Creset" $k|head -n 1`\\t$k;done'

# Output
# ------
# ~/Development/github(master)$ gb
# 4 weeks ago	config-gem
# 9 days ago	dropdown
# 5 weeks ago	faucet
# 3 weeks ago	health