I wouldn't include "The Sopranos" on this list.
The Sopranos didn't jump the shark, it just got stupid and it dragged on for a season too long.
Problem that people have with Sopranos is that the final season or two dragged out as far as when they aired. Also ... the way the finale CUT to black (as opposed to "faded to ..." in a hail of gunfire and shit). Gotta admit though ... that show was captivating and a shitload of BGOL'ers were following it throughout much of the 2000s.