1. Bold the shows of which you've watched every episode
2. Italic the shows of which you've seen at least one episode
2a. Star the shows you consider "the best" (Addition by
tidesong)3. Post your answers
50. Quantum Leap*
49. Prison Break
48. Veronica Mars
47. Star Trek: Deep Space Nine
46. Sex & The City
45. Farscape
44. Cracker
43. Star Trek*
42. Only Fools and Horses
41. Band of Brothers
40. Life on Mars
39. Monty Python's Flying Circus*
38. Curb Your Enthusiasm
37. Star Trek: The Next Generation*
36. Father Ted
35. Alias
34. Frasier
33. CSI: Las Vegas*
32. Babylon 5*
31. Deadwood
30. Dexter
29. ER
28. Fawlty Towers
27. Six Feet Under
26. Red Dwarf*
25. Futurama*
24. Twin Peaks*
23. The Office UK
22. The Shield
21. Angel
20. Blackadder*
19. Scrubs*
18. Arrested Development
17. South Park
16. Doctor Who* (Given it's on it's 30th season (26 original, and I think it's just about to start it's 4th or 5th season of the new series), I think, and many episodes have been lost, I think you would be hard pressed to find anyone who has seen all of the episodes.)
15. Heroes*
14. Firefly*
13. Battlestar Galactica (I've watched all of the original series, none of the new one.)
12. Family Guy
11. Seinfeld
10. Spaced
09. The X-Files*
08. The Wire
07. Friends
06. 24
05. Lost*
04. The West Wing
03. The Sopranos
02. Buffy the Vampire Slayer*
01. The Simpsons*
I have strong doubts about the quality of this list, as M*A*S*H is now where on it.