I'll definitely recommend both 'Life on Mars (UK Version)' and 'Ashes to Ashes'.
Life on Mars (UK): Drama about a present-day Manchester detective who, after suffering near-fatal injuries in a car-crash, awakes to find himself living in 1973.
Ashes to Ashes: Crime drama series featuring Life On Mars' DCI Gene Hunt. After being shot in 2008, DI Alex Drake lands in 1981, where she finds herself in familiar company.
I would highly recommend both.