Welcome to the Being John Malkovich episode of scienceTASTIC, as we each take turns crawling into each other's heads and covering stories we think our co-hosts would pick. Mike (dressed up as Mark) delves into the phychology of the soccer penalty kick, Mark (doing a superb impression of Joe) demos a new portable sleeping cocoon, and Joe (wearing a Mike mask) explains how to make hydrogen fuel out of titanium leaves. The second half of the show is more like Vice Versa (or Like Father, Like Son if you're in more of a Dudley Moore-ish/Kirk Cameron-y kinda mood) as we once again swap minds and discuss animal chatter, space pee, and the eponymous English squirrels.

What we didn't get to: amputated hands, black holes, and discount space shuttles.