Batman 66 looks pretty great. I hope DC decides to do the same with some other classic TV series: The Superfriends, the Adventures of Superman (with George Reeves), and, of course, Batman the Animated Series and Justice League Unlimited. The cool thing about the latter 2 is that they can make new stories without having to worry about contradicting a concurrent series.
BTW, not a comic, but I'm finally going to start watching Batman: the Brave and the Bold soon.
Also, with a new Superman movie coming out, I would kill for DC animated to make a Superman animated series in the vein of All Star Superman (Not just an animated adaption like they already did, but a series that mixes cool action with silver age fun).