Charles Dance is brilliantly nefarious as the lawyer Tulkinghorn. Denis Lawson is utterly beleivable as the generous Jon Jarndyce. Burn Gorman as bumbling and ambitious Guppy is delightfully embarrassing to watch. Nathaniel Parker gave me the shudders with his portrayel of Skimpole who claims to be as "innocent as a child" when it comes to matters of money and the world, but manipulates all around him so he can live off their wealth. Oh, I could go on and on!
It's about 7 hours long in 30 minute episodes (except for the first which is a full hour). It makes it easy to split it up over time if desired, but watch it you must. This is the best way to enjoy Dickens. Here's the trailer for it: