I read the comic series that this is based on (which in turn was based on an original TV pitch) and loved them so I was really excited to see this. And I wasn't let down at all.
Part of the fun of the comics was that it was just nonstop ridiculous fun, and my biggest worry was that they wouldn't carry it over to the show, but they did.
I can see how some people could have a problem with the dialogue and the banter-iness of it but to me that's what makes it fun. They're not bothering to make it realistic at all. To me, it is basically just a live action cartoon which I think is awesome. Sometimes I just get tired of shows that feel the need to be realistic and just want something that is silly and fun. I think this show is it.
Sadly, the fact that I loved the first episode pretty much guarantees that it will get canceled shortly. (Let's count the times this has happened; Keen Eddie, Firefly, New Amsterdam, Greg the Bunny, Freaks and Geeks, Wonderfalls, Undeclared, The Tick, Black Donnellys, Daybreak, Dresden Files, Night Stalker, etc, etc.)