It's worth finding a DVD of this as it's hard to find all in one place. I linked the first full episode above, and it's a doozy. Watch it with your friends.
"Look Around You" offers a combination of satire and homage to British educational programs of the 1970s and 1980s. A different scientific topic is tackled in each episode, including calcium, water, germs and iron, and running gags continue from week to week, as the series goes on.