I loved to watch the Next Generation-my username (and alias!) are taken from my all-time favourite character, Jean-Luc Picard, always a true English Getleman!
A very close second comes "Q". Some people find his character really irritataing, I find him extremely funny & charismatic, especially as he refers to the Captain as if he was his buddy "Jean Luc", and makes himself immeditaely at home on his visits to the Enterprise.
(Yes, I know, I'm very sad).