Picard (no contest)
Spock (among the ones that stay in that position for most of the show)
Odo (I like all those non-human obsever type characters like Spock, Data, Odo and such.)
Bashir (Favorite DS9 character)
Trip (I know, nobody but me likes Enterprise, but he was my favorite from that season. Scotty and Geordi are close, though.)
Paris (Hoped to get away without any VOY, but he is clearly the most memorable; Sulu always seemed to be a fairly minor character for a member of the core bridge team to me, but I am not that much of a TOS guy.)
Dukat (was there any other real villain?)
Also, what about stuff like Science, Operations, Tactical and such? This crew definitely needs more Data.