Currently watching Code Lyoko (rewatch) in the morning and Batman: The Animated Series (first time) at night. They work well in those time slots.
Given how old you folks here tend to be, you probably aren’t familiar with Code Lyoko, but do yourself a favor and give it a shot. It’s about a group of schoolkids defending the Earth from an evil computer virus by entering a virtual world while trying to bring their virtual friend into the real world. The first season episodes are all self-contained (save for the finale) but later seasons have story progression. Oh and the real world is 2D animation while the digital world is 3D.
Batman is great too, but the Internet has already waxed endlessly about it’s greatness, so I don’t feel the need to add to it. I’d be hard-pressed not to mention it’s brilliant stylized art deco design, though.