Sam & Cat starts off really well! It begins with Sam (I assume after high school since the series finale of iCarly actually takes place most likely in May or June and Carly was revealed to be too old for a father-daughter dance by the next year, which is usually 18) who is driving across the country on her motorcycle, with no where else to be now that Carly's gone. Once she meets Cat and they have to take over the responsibility of babysitting kids that was previously done by Cat's grandmother, she finds a reason to settle somewhere.
Note that this is a show created by Dan Schneider, so quit looking for fictional role models! If you understand his humor or why he adds in things if you read the fun facts for some of his shows on his blogs, you'll be able to understand and hopefully enjoy this show.
Take the show like this: we all know Sam isn't that good with kids as she never really got along with them, and although Cat is just about Sam's age, she's still like a little kid herself. I feel that can make their time with kids so crazy and part of why the show will be fun. To top it all off, as you see in the first episode, the kids give Cat's Nona a hard time and by the end of the episode, the kids and Sam and Cat are able to have a overall good day with each other that pleases their parents. Sam living with Cat and taking care of little kids can bring out a softer side of her which I think is evident in the first episode - but more on that in a bit. Cat could have more of a tougher skin living with Sam as she probably would if it were Jade from Victorious.
It was nice to see that good side of Sam almost after the show starts. Saving Cat and giving Cat all the money they earned from babysitting at the end of the day. Cat, being already sweet, whether or not you've been irritated by her voice, sleeping with Sam on the couch for the night was also a good scene as we are told what made Sam not stay in Seattle anymore. With their connection already in check, I can tell we can see more of that as time goes on which is what makes the show good: Sam & Cat's connection. It's sweet in its own way the way Sam & Carly were in iCarly.
What else makes the show good are the other main characters, Dice and Nona, played by Cameron Ocasio and Maree Cheatham. Especially Nona, who already fits in as the sweet grandmother of Cat's we heard about in Victorious.
There's going to be a ton of crazy stories during this show's run and I'm prepared for it. For me, this show will either show in a funny way, why you should or shouldn't leave your kids with Sam & Cat. Still, it's best to look at the show in this perspective, of all the things that's been mentioned and enjoy the show. It had a good opening, one of the best pilots I've seen for a show from Schneider's Bakery and it was funny and sweet (the least I can say without already going deep into the show).