New Show of Note: The Batman (WB, 10:30am Eastern) is the new animated cartoon, which is separate from the old Paul Dini/Bruce Timm Batman and promises to focus on Batman's early years. Actually I'm prejudiced against this, as its mere existance has caused the cancellation of DC's Batman Adventures comic, which was easily the best Batman comic they've been publishing for years (Ty Templeton is The Man!) But even so I'll give it a shot.
Comics Connection: in addition, Saturday also gives us Justice League Unlimited (Cartoon, 8:30pm), a third season reworking of the JL toon which features shorter stories and gets to play with nearly the entire pantheon of the DC Universe. I never really warmed to the Justice League toon before, but I've really been sucked-in by the revamp.
Also: Amazing Race (CBS, 8pm) is relocated from its successful run on Tuesday nights in the summer to the wasteland of Saturday. This is the best 'reality' show on television, and the only one I watch. In fact, I'm downright obsessed with it. I do wish they wouldn't always compress the contestants so much after each round and make finishing order more important, but I understand that this needs to be done in order to heighten the drama and move Phil around, and they need to bring back the Fast Forward for every round. (See, told you I was obsessed!)