There is a bizarre animated biography on IKB made by the BBC in 1975: http://transportationist.org/2012/09/17/great_isambard_kingd... "It is mostly about Brunel, but it is also telling of the state of the UK in the early 1970s. Something was clearly wrong that this was green-lighted." What is even stranger is that it won an oscar in 1976. Its definitely worth watching if you can find it.
I didn't find that film, but I found this film: http://www.youtube.com/watch?v=LXgGsEO1b04
Which, for a condensed, half-witty animation, does a fair job of putting such a life into 3 minutes.
The best I found on the Oscar winning film are some clips: http://0xdb.org/0073068/clips/position . From the clips, I would describe it as a cross between the animations of Monty Python's Flying Circus and Yellow Submarine.
And those clips worked best in Firefox, click a frame and wait for no feedback, and then 5 seconds will play (with audio) when you least expect it.