This is a preseed file, written for Ubuntu Server 14.04.2, that provides a partially automated installation.

ubuntu-1404-preseed

# Ubuntu Server automated installation
# by Felix Fischer (kontakt@felixfischer.com)

d-i debian-installer/locale string en_US
d-i console-setup/ask_detect boolean false
d-i keyboard-configuration/layoutcode string de
d-i netcfg/choose_interface select eth0
# d-i netcfg/get_hostname string hostname
# d-i netcfg/get_domain string domain.com 
d-i time/zone string Europe/Berlin
d-i clock-setup/ntp boolean true
d-i clock-setup/ntp-server string de.pool.ntp.org
d-i passwd/root-login boolean true
d-i passwd/make-user boolean false
d-i passwd/root-password password GoForChange
d-i passwd/root-password-again password GoForChange
d-i passwd/user-fullname string Administrator
d-i passwd/username string administrator
d-i passwd/user-password password GoForChange
d-i passwd/user-password-again password GoForChange
d-i user-setup/allow-password-weak boolean true
d-i user-setup/encrypt-home boolean false
d-i pkgsel/include string openssh-server update-motd
tasksel tasksel/first multiselect server, openssh-server
d-i pkgsel/update-policy select none
d-i grub-installer/only_debian boolean true
d-i grub-installer/with_other_os boolean true