I've never mentioned my code as being famous. I've always used h and t in one-liners, maybe because of the person who taught me OCaml.
H and t can also be found in the official Caml and batteries source code, along with hd/tl, a/l and probably x/xs if it pleases you.
I can't agree more about naming variables correctly where it makes sense though.
Personally, I always use x::xs in one-liners and something meaningful (no, neither head nor h is meaningful) in longer matches.