Naturally we'd recommend voting for David Tennant's era but there's also some stunning episodes from Christopher Eccleston and Matt Smith to choose from..
So here’s what you need to do:
1. Select a single episode from each list here (one regular episode, one special), and cast your votes. The poll will stay open through August 18 at 12 p.m. EST.
2. Tune in to the Doctor Who marathon all day Sunday, August 24 and see which episodes made the cut.