As Doctor Who reaches its exceptionally impressive 60th anniversary this week, it's an ideal moment for newcomers to step into the TARDIS and explore the series' classic era, which have recently all become available on BBC iPlayer. From the inaugural episodes in 1963 to the advent of the Seventh Doctor, this era laid the groundwork for the beloved science fiction show prior to its extended hiatus in 1989. While many fans will have stepped onboard from the 2005-era revival, now's the perfect time to try out some classics - here's our picks: