"If I want to change time, I will!" - so declares 30 Rock's SCOTT ADSIT in BBC America's THE TIMEY-WIMEY OF DOCTOR WHO.

Relive a climactic moment from the Tenth Doctor DAVID TENNANT's run in "The Waters of Mars" - with commentary from celebrity Whovians, including the Fifth Doctor's PETER DAVISON, The Nerdist's JONAH RAY & CHLOE DYKSTRA and more.

Debate The Doctor's essential challenge - whether to save a life, or let history play itself out - and discuss why it's essential that The Doctor has a companion along in the TARDIS with him (hint: it's not just that he gets lonely on vacation.)

When the Doctor's around, tomorrow is yesterday, yesterday is tomorrow and 18th century France is in your fireplace. Confused yet? This all new special will try to make sense of all the "wibbly wobbly, timey-wimey... stuff."