I've got Shrek on. Before that was 'Fairly Odd Parents', and before that 'Invader Zim'.
I like the others, but I truly adore 'Invader Zim', especially his robot dog and minion GIR. The episode I was watching had Zim and Gir try to ride the bus, which was quite funny. The episodes are out on DVD, but I'm not sure I love them enough to get them. Still, it was fun to see it on TV; I didn't think they were showing them again. :)