The Star Wars The Clone Wars episode guide is pretty amazing. It just came out. It's $20 bucks in Canada so that means it's probably .20 cents in the states? I had a chance to flip through it last night and it was incredibly useful for picking out which ones to rewatch. Of course there is the internet for episode listings but the book is really well laid out and there are little pictures highlighting which characters highlight each show, locations and highlights, etc. Maybe best of all is that is lists the shows in story order, not airdate order. I look forward to rewatching these in order.
I had to laugh when I read that the two weakest points of the entire series were both heavily consulted with George Lucas! Namely the Mortis trilogy and A Sunny Day in the Void.