The only filmed version of Dickens' Christmas Carol I can stomach is the musical one with Albert Finney.

You can't ever have seen the 1951 version with Alistair Sims, !"Scrooge".

Worst? I generally seem to be able to wipe films I don't like from my memory. I think any version of the Christmas Carol set in modern times would probably qualify. I'm sure I've seen a few, at least part of the way through, but the memory has mercifully deliquesced.