Yeah I saw that, plus watched another programme on the History Channel earlier this year which also involved an old house maid describing how she used to look after Hitler, Eva and a bunch of other Nazi's in Argentina until his death.
Sorry mate, but I saw nothing that convinced me he made it out of Germany, let alone Berlin.
Folks believe what they want to believe. I see it almost everyday in my job where people quickly jump to conclusions based upon very little information and heresay. The investigators clearly believed Hitler made in to South America based upon some old files and took the viewer on a journey to prove it or at least tried too. They certainly didn't remain neutral during their enthusiastic pursuit to find the truth, as any good investigator would, which compromised their efforts from the start.
As for my personal view, we may never know for sure how Hitlers life ended be it at his own hand or others. But I believe the bunker scenario to be the most likely and both facts and circumstances evidence support this theory above all else at this time.
Cheers Toddy