Yes, it's also my favorite show. But I only watch the subtitled version. And anyways, the dubbed version has been halted...the creators are waiting to get licensed for the fourth season, while I'm waiting for Animax to show Season 5. Seriously, I can't get enough of the green one, Keroro. His whole Ge~rogerogerori bit's grown on me. And the whole thing of Giroro and Natsumi's just strange. Giroro's seriously gonna change once he sees Natsumi...
Spoiler:
(I had to do so, because I'm guessing that you've never watched the fourth season, especially to that bit.) It's just so comically funny. Especially the bit of Natsumi going all-out physical against Keroro, especially when anything goes wrong.