There's a funny youtube video [1] about 10 coin flips in a row. The guy apparently did tons of takes until he got it. The successful take is one in which he alternates HTHT... which makes me think that he was trying for all H, all T, or alternating HT, to make it easier on himself.

1: https://www.youtube.com/watch?v=aHU-L3BLd_w