I always thought
Leaderboard looked pretty awful - considering they were just static screens:
http://hol.abime.net/843
And coming a close second must be
Castlevania - remember this was 1990 - the year that brought us graphical masterpieces such as Turrican and Cadaver. How they thought it worthy of release is beyond me!
http://hol.abime.net/2953
(The NES version played and looked a lot better too)