KAT-TUN's show is cartoon KAT-TUN. I think it's a really entertaining show. I've only caught two episodes of it but i liked both quite a bit. I saw episode #5 with Sekine Mari & Avril Lavigne. Well, they chatted with Mari and played darts with Avril. They were quite impressed with how well Mari could speak English. Very funny to see their reaction.
I also thought it was funny that they brought the singer of their show's theme song on as a guest. Also, episode #11 with Becky is really funny and entertaining. They also performed "Your Side" at the end of that episode. When i get a chance, i plan on catching more since like you said, it's actually quite alright. So which episode did you catch, strawberry?
I used to not really care for Kame but i have to say he's starting to appeal to me now.