We had a Chemistry teacher called Mr. Cunningham, and he was a massive Happy Days fan, amongst other retro things. I remember walking in and watching him write on the board: C is for Chemistry C is for Cunningham. He had me there! Usually, I'd think a teacher doing that would be unbelievably sad, but not with Mr. C. Scouse charm, enthusiasm and great people skills. We would have a competition, me and him, in a lesson to see how many times we could refer to song lyrics by a band or artist. Paul Simon was a brilliant one, it ended up with Mr. C going "Carbon dioxide is written as C-0-Kookooca two". Loved him, a brilliant teacher. I had a drink with him the other day and it's like he's a mate, not a teacher.