Ok, the sequels suffered greatly by comparison to the original, but I liked the Merovingian (not to mention his lovely plug-in, Persephone, wearing satin

). But you have to admit, he did have some of the best lines, well delivered.
Merovingian: French is the best language to swear in.
[stream of curses]
Merovingian: It's like wiping your ass with silk.
Hehehe...nice.
ps, could not find mp3 of this line. rats. or, le rats.