Thanks to Katie and Flyer for the following.
I was channel surfing and came into this at number 17. I'm pretty sure Hugh Laurie/Dr. Gregory House was either 18, 19 or 20, but not sure about the other two, but here are 17 of the 20 along with all that was said about Jack/Foxy with names of who said it where available. He's in pretty good company in that top 5. Yes? (Please excuse any spelling errors)
17. Dr. Preston Burke - Isaiah Washington - Grey's Anatomy
16. Dr. Billy Kronk - Peter Berg - Chicago Hope
15. Dr. Eric Foreman - Omar Epps - House
14. Dr. Gonzo Gates - Gregory Harrison - Trapper John, M.D.
13. Dr. Peter Burns - Jack Wagoner - Melrose Place
12. Dr. Sam Bennett - Tae Diggs - Private Practice
11. Dr. Tony Gates - John Stamos - ER
10. Dr. James Kildaire - Richard Chamberlain - Dr. Kildaire
9. Dr. Mark Sloan - Eric Daine - Grey's Anatomy
8. Dr. Luka Kovac - Goran Visnjic - ER
7. Dr. Christian Troy - Julian McMahon - Nip/Tuck
6. Dr. Steven Kiley - James Brolin - Marcus Welby, M.D.
5. Dr. Bobby Caldwell - Mark Harmon - St. Elsewhere
4. Dr. Jack Shephard - Matthew Fox - LOST
3. Dr. Philip Chandler - Denzel Washington - St. Elsewhere
2. Dr. Derrick Shepherd - Patrick Dempsey - Grey's Anatomy
1. Dr. Doug Ross - George Clooney - ER
Source: TV Guide