I, Claudius is a 1976 BBC Television adaptation of Robert Graves’s I, Claudius and Claudius the God. Written by Jack Pulman, it proved one of the corporation’s most successful drama serials of all time.
It starred Derek Jacobi as Claudius, with Siân Phillips, Brian Blessed, George Baker, John Hurt and Patrick Stewart.
Graves’s I, Claudius is in the List Muse 100 Best Novels of All Time and the Modern Library’s 100 Best Novels.
For the DVDs try here in the UK and here in the USA.
Source: Wikipedia; For an episode guide see here. There’s a documentary on the series here and there’s a humourous tribute to the show by Sesame Street here.
1. A Touch of Murder
2. Waiting in the Wings
3. What Shall We Do About Claudius
4. Poison is Queen
5. Some Justice
6. Queen of Heaven
7. Reign of Terror
8. Zeus, By Jove!
9. Hail Who?
10. Fool’s Luck
11. A God in Colchester
12. Old King Log
P U L S E 
Here’s a playlist of all episodes, if people prefer: http://www.youtube.com/playlist?list=PLB9E6AE90A6D17AC3
Oh, and there’s this one-hour doc on the making of, with cast and crew interviews: very good: http://www.youtube.com/playlist?list=PLDCCFA99CD389318C
Thank you so much! I watched this series when it first came out but wanted to see it again. I am watching BBC iPlayer now but missed the 1st 3 episodes. Great to keep and post, great! Jill